Junichi Okada’s Fitness & Wellness Routine | Martial Arts, BJJ, Strength Training & Life at 45

October 7, 2026 OBARASOTARO

Actor Junichi Okada has built a career not only through film and television, but also through years of serious study in martial arts, Brazilian jiu-jitsu, combat sports and strength training. Now 45, he continues to pursue what he describes as a body that can truly move.

Born on November 18, 1980, in Osaka, Japan, Okada debuted in 1995 as a member of V6 and gradually established himself as one of Japan’s leading actors.

He gained wide recognition through works such as Kisarazu Cat’s Eye and SP: Security Police, before going on to appear in major films including The Eternal Zero, A Samurai Chronicle, Fueled: The Man They Called Pirate, Sekigahara, the The Fable films and Baragaki: Unbroken Samurai.

In 2014, he played the lead role in the NHK Taiga drama Gunshi Kanbei. At the 38th Japan Academy Film Prize, he won both Best Actor for The Eternal Zero and Best Supporting Actor for A Samurai Chronicle, confirming his reputation as a serious dramatic performer.

In 2025, his career entered another stage with Netflix’s Last Samurai Standing, in which he served as lead actor, producer and action planner.

That triple role reflects how far his physical training has developed. Okada is no longer focused only on how his own body moves. He now helps shape the movement, rhythm and action language of an entire production.

His training is equally distinctive.

Rather than focusing only on muscle size, Okada studies balance, first movement, distance, core stability, whole-body coordination, angles and the direction of force.

In Brazilian jiu-jitsu, he was promoted to black belt in 2024. A 2025 documentary profile showed that when he is not filming, he may train at the dojo around six days a week, describing jiu-jitsu as a way to study “how the body works.”

Earlier in his career, Okada once thought that truly demanding action might only be possible until around age 35.

More than a decade later, at 45, he is still training intensely, practicing jiu-jitsu at black-belt level and designing action for internationally distributed productions.

His everyday habits are much simpler. One long-running food routine is yogurt, which he has said he has eaten regularly since childhood and continues to enjoy every morning as an adult.

In his personal life, Okada married actress Aoi Miyazaki in 2017. In 2018, the couple officially announced the birth of their first son. Long before marriage, Okada had already spoken about becoming a father and building a family, making that part of his current life another continuation of ideas he held when he was younger.

Here, we take a closer look at Junichi Okada’s fitness and wellness routine, including strength training, Brazilian jiu-jitsu, Jeet Kune Do, Kali, combat sports, core work, body mechanics, role preparation, yogurt, family life with Aoi Miyazaki and his evolution as an actor, producer and action planner at 45.

Junichi Okada’s Strength Training: Building a Body That Can Still Move at 45

To understand Junichi Okada’s approach to training, it helps to look beyond muscle size.

His focus is on what the body can actually do.

Strength, explosiveness, core stability, balance, weight transfer and whole-body coordination all connect to one central goal: a body that can move efficiently and expressively.

He Once Thought Serious Action Might End Around 35

One of the most interesting ways to understand Okada’s physical evolution is to look back at his SP era.

At the time, he said he wondered whether truly demanding action—moving exactly as he imagined and pushing his body hard—might only be possible until around age 35.

That sense of limited time made him even more determined to create action that could reach audiences beyond Japan.

What happened next was almost the opposite of what he expected.

His physical study became deeper after 35.

In his 40s, he became more serious about Brazilian jiu-jitsu, earned a black belt and expanded from performing action to designing it for other actors and entire productions.

💡 He Once Imagined His Most Demanding Action Years Would End Around 35
At 45, Okada is still training, competing and designing action for globally distributed productions—making his career arc especially striking.

Morning, Night and Before Filming: Training as Part of Daily Life

For Okada, training is not something reserved for the weeks before a film.

By his 30s, martial arts and physical practice were already part of his everyday routine.

In 2022, he said that he trained in the morning and evening and would also spend around an hour moving his body before going onto a film set.

In an earlier interview, he explained that when invited out for drinks, he would sometimes choose martial arts training instead because practice was already part of his schedule.

For him, training functions as a natural rhythm of daily life.

That consistency helps explain how his physical vocabulary has continued to expand well into his 40s.

💡 Training Before Filming Is Part of His Routine
Okada has described moving his body in the morning and evening, as well as training for around an hour before work on set.

His Real Fascination Is Body Mechanics

One of the clearest themes in Okada’s training is body mechanics.

When moving an arm, he does not think only about the arm itself.

He looks at how the feet, hips, core and center of gravity connect to that movement.

When transferring force, he pays attention to position, timing, angle and weight shift in addition to muscular strength.

Years of martial arts practice have taught him to think of the body as one connected system.

In 2024, he even said that one thing he would like to try someday is being a kind of “exercise instructor for children,” sharing practical ways of using the body.

That idea shows how his interest has grown from training himself to communicating physical knowledge to others.

💡 One Future Idea: Teaching Children How to Move
Okada has expressed interest in sharing body mechanics with younger generations, especially the idea that movement begins with whole-body coordination.

Brazilian Jiu-Jitsu, Jeet Kune Do, Kali and Combat Sports

Martial arts are central to Okada’s physical identity.

Over the years, he has studied several disciplines and used what he learns from each one to deepen his understanding of movement and action performance.

Brazilian Jiu-Jitsu: From Competition to Black Belt

Brazilian jiu-jitsu has become one of Okada’s most serious disciplines.

He began training more seriously around 2019.

In 2023, he entered the World Master competition in Las Vegas as a brown belt in the Master 3 light-feather division and advanced past his opening match.

In 2024, he was promoted to black belt.

When receiving the belt, he described it as the beginning of an even harder path rather than a finish line.

A 2025 documentary profile then showed how serious the practice had become: when not filming, he may train at the dojo around six days a week.

Okada describes jiu-jitsu as a study of how the body works.

Grappling requires constant awareness of balance, angles, force, distance and timing.

Those sensations feed directly back into his work as an actor and action performer.

Even after earning his black belt, he continues to learn.

In 2025, he attended a seminar by elite jiu-jitsu athlete Mikey Musumeci, continuing to study new techniques and approaches from world-class practitioners.

💡 World Master Competitor, Black Belt and Six-Day-a-Week Training
For Okada, Brazilian jiu-jitsu is both a competitive discipline and a way to study the mechanics of the human body.

Jeet Kune Do, Kali and Shooto: Learning Across Different Systems

Okada’s martial arts background extends beyond Brazilian jiu-jitsu.

He has also studied Jeet Kune Do, the Filipino martial art Kali and Shooto-related combat training.

Each discipline emphasizes different ideas: striking, grappling, weapons, distance, balance and breaking an opponent’s structure.

By learning across several systems, Okada has developed a broader way of thinking about movement.

That range also gives him more options when creating action for film.

As his martial arts knowledge deepened, he also became more aware of the difference between practical fighting movement and cinematic action.

Real martial arts often value efficiency and economy.

Film action has another responsibility: the audience needs to understand what happened, who has the advantage and what the moment means emotionally.

Okada’s work therefore involves translating authentic physical principles into movement that reads clearly on camera.

Knowing the real mechanics allows him to decide what to preserve, what to exaggerate and where to add dramatic rhythm.

That way of thinking later became central to his work as an action planner.

Meikyo Shisui: From Martial Arts Student to Communicator

Okada has also become one of the most recognizable faces of NHK’s martial arts program Meikyo Shisui.

The program explores a wide range of traditions, including classical Japanese martial arts, karate, jiu-jitsu and sumo.

Rather than focusing only on techniques, it looks at the principles and body mechanics behind them.

In 2026, Okada even examined soccer movement through the martial arts idea of “breaking balance,” showing how far his interest in body mechanics now reaches beyond combat sports.

Martial arts have therefore become more than personal training for him.

They have become a culture he studies, interprets and increasingly helps communicate to a wider audience.

💡 He Even Looks at Soccer Through Martial Arts Principles
On Meikyo Shisui, Okada has explored movement in other sports through concepts such as balance, timing and breaking an opponent’s structure.

Strength, Core Training and Role Preparation: From SP to The Fable and Last Samurai Standing

Okada does not train toward one permanent body type.

His physique changes according to the role.

Muscle mass, overall build, movement, posture and even how heavy the body appears on screen are all part of character creation.

Designing the Body for Each Character

One of the most distinctive aspects of Okada’s role preparation is that he treats the body itself as part of acting.

A character who needs speed may require a lighter physical impression.

A character who needs authority may benefit from more size and weight.

After building a fuller physique for the Taiga drama Gunshi Kanbei, he carried some of that presence into a later Library Wars project because it suited the authority of his character.

For Okada, muscle and body shape function like costume, voice and dialogue: they help communicate who the character is.

The Fable: Three Months of Strength Training, Power and Explosiveness

For the film The Fable, in which he played legendary assassin Akira Sato, Okada worked with a personal trainer for around three months, focusing heavily on strength training.

The original manga character is relatively lean, but the live-action version also needed a physique that made his strength believable.

Okada therefore adjusted his size carefully, building enough presence without making the character look excessively bulky.

He focused on both power and spring-like explosiveness.

He also prepared his body for the demands of repeated action scenes.

His first movement is so fast and distinctive that members of the action team reportedly felt it would be difficult for a double to reproduce exactly.

That made control, timing and physical preparation especially important because many scenes depended on Okada himself performing the movement.

💡 Three Months of Training for The Fable
Okada worked on strength, explosiveness and a carefully balanced physique so that the live-action character would feel both believable and agile.

Everest: The Summit of the Gods: Hypoxic Training and Ice Climbing

A very different kind of preparation was required for Everest: The Summit of the Gods.

Because filming took place at elevations above 5,000 meters, Okada prepared with hypoxic training.

He also practiced ice climbing to prepare for movement on steep frozen terrain.

The role required a kind of physical preparation far removed from conventional gym training.

One memorable story from the shoot involved a large backpack.

Okada’s core stability made the pack appear lighter on screen than the production team wanted.

So actual rocks were added to the bag to create more visible weight.

It is a humorous anecdote, but it also shows how strongly posture and core control can affect the visual impression of a character.

💡 Hypoxic Training—and Real Rocks in His Backpack
After preparing for high-altitude filming with specialized training, Okada still looked so stable under load that the crew added rocks to make the backpack appear heavier on screen.

Last Samurai Standing: From Training His Own Body to Designing Everyone’s Movement

Netflix’s 2025 series Last Samurai Standing represents the clearest evolution of Okada’s physical knowledge.

He played protagonist Shujiro Saga while also serving as producer and action planner.

His work on the action began during the script stage.

He helped develop concepts for individual action sequences and considered how different characters should move and fight.

That marks a major transition.

For years, he studied how to use his own body on screen.

Now that knowledge helps shape the movement of an entire cast and the physical language of a whole production.

💡 Three Roles on Last Samurai Standing
Okada served as lead actor, producer and action planner, bringing more than 30 years of screen experience together with decades of physical study.

Yogurt, Food and Recovery: Everyday Wellness Habits

Okada speaks most often about movement and training, but one of his longest-running food habits is surprisingly simple: yogurt.

Yogurt Every Morning, a Habit That Began in Childhood

At a 2018 event, Okada said that he ate yogurt every morning.

It was already familiar to him from childhood.

He recalled that yogurt was always in the family refrigerator and regularly appeared at home.

As he became more conscious of his own wellbeing as an adult, he continued the habit more intentionally.

He also looked back on the fact that his parents had regularly provided it for him and described that memory as part of the care he received growing up.

💡 His Morning Yogurt Habit Goes Back to Childhood
What began as an ordinary food in the family refrigerator became one of the simple routines he continued into adulthood.

Making Room for Food He Looks Forward To

With six-day-a-week jiu-jitsu periods, role-specific training and daily physical practice, Okada can appear extremely disciplined.

He also makes room for enjoyment.

After competition, he has shared meals he had been looking forward to eating once the event was over.

That combination of structured training and simple enjoyment makes his routine feel less like a temporary program and more like a long-term lifestyle.

Aoi Miyazaki, Children and Family: The Fatherhood He Imagined in His 20s

Family is another important part of understanding Junichi Okada’s life today.

Marriage to Aoi Miyazaki and the Birth of Their First Son

Okada married actress Aoi Miyazaki in December 2017.

The two had previously appeared together in films including Kagehinata ni Saku and Tenchi Meisatsu.

In October 2018, the couple officially announced the birth of their first son.

In their announcement, they expressed their intention to take responsibility for the new life entrusted to them and to raise their child with care.

He Was Thinking About Fatherhood Long Before Marriage

One of the most interesting parts of Okada’s personal story is that he was talking about family and fatherhood many years before he married.

His parents divorced when he was still in elementary school, and he was raised primarily by his mother.

He has spoken about being encouraged to become someone who could stand on his own and make his own way in life.

As a young man, he read widely and watched many films while thinking about the kind of adult he wanted to become.

Around age 20, he began to value the idea of being able to say that the present moment was the happiest part of his life.

He also said that he hoped to have a family and become a father someday.

Years later, he married and became a parent, giving those early comments a sense of continuity with the life he eventually built.

💡 He Was Already Thinking About Fatherhood in His 20s
Long before marriage, Okada spoke about wanting a family and about becoming the kind of person who could genuinely say that the present was the happiest stage of life.

Junichi Okada at 45: Actor, Producer, Martial Artist and Action Creator

Junichi Okada turned 45 on November 18, 2025.

By then, three decades had passed since his 1995 debut.

From Kisarazu Cat’s Eye, SP, The Eternal Zero, Gunshi Kanbei, Sekigahara, The Fable and Baragaki: Unbroken Samurai, he has built one of the most distinctive physical acting careers in Japan.

Today, his work extends beyond acting into producing, action design and communicating martial arts culture.

The Future He Imagined at 35 and 37 Became Reality at 45

During his SP years, Okada felt that he had limited time to create world-class action while his body could still handle the most demanding movement.

In 2018, at age 37, he also spoke about the kind of 45-year-old man he hoped to become: someone healthy, mature and fully developed in his own way.

Now he has reached that age.

He is a Brazilian jiu-jitsu black belt, may train six days a week when not filming, and has helped create an internationally distributed Netflix action series as lead actor, producer and action planner.

The young actor who once worried about how long his body could keep doing demanding action eventually expanded his career by learning more deeply about the body itself.

💡 The 45-Year-Old He Imagined Years Ago Is Now Here
Okada once spoke about aging well and staying healthy. At 45, he is still training, competing, creating action and taking on new roles behind the camera.

Still Learning—and Increasingly Teaching

A consistent thread runs through Okada’s training and career: he keeps learning.

He maintains daily physical practice.

He studies several martial arts.

He competed in Brazilian jiu-jitsu and progressed to black belt.

Even after earning that rank, he continues to learn from elite athletes.

He changes his physique according to the role and, in his 40s, increasingly emphasizes a body that can continue to move.

Through Meikyo Shisui, he helps introduce martial arts and body mechanics to a wider audience.

Through Last Samurai Standing, he applies that knowledge to an entire production.

Strength, jiu-jitsu, martial arts, core work, body mechanics and everyday habits all connect to the same larger idea for Okada: understanding the body.

That understanding has expanded from personal training into acting, action design, producing and sharing physical culture with others.

At 45, he continues to refine both his body and his work without treating either one as finished.

That curiosity and willingness to keep learning are what connect Junichi Okada’s fitness, martial arts, wellness habits and more than 30 years as a performer.