How Alan Ritchson Is Rebuilding His ‘Reacher’ Training Around Longevity Rather Than Size

Alan Ritchson has never been shy about the physical toll of playing ‘Reacher,’ and his approach to training for the show’s fourth season reflects a noticeably different philosophy than the one that first defined the role. Rather than continuing to chase heavier lifts and dramatic transformations, the actor has shifted toward lighter loads paired with significantly higher training volume, a change he has described as being about sustainability rather than raw strength.

That shift has become central to how Ritchson talks about his career going forward, and it says as much about his relationship with his own body as it does about preparing for another season of action television.

Alan Ritchson Training Approach Built Around Volume

During filming for the new season, Ritchson shared a workout built around a giant set totaling as many as 240 reps, using just one barbell and three compound exercises rather than a full gym setup. This approach favors what fitness experts describe as hypertrophy focused training, where higher rep ranges between roughly 15 and 25 reps per set generate muscle growth more effectively than traditional low rep, heavy weight strength training.

On Instagram, Ritchson summarized the philosophy directly, writing that low weight combined with higher volume equals hypertrophy and longevity. To prepare for filming, he has been shown completing four rounds of an intense upper body superset with maximum intensity, made up of three exercises each round, all performed with a single EZ bar rather than a full equipment rotation.

That single piece of equipment approach is not new for him. In earlier training clips, Ritchson worked through high volume upper body supersets using just an EZ bar, moving quickly between curls, overhead presses, and upright rows to keep his heart rate elevated throughout the session.

The consistency of that method, rather than any single dramatic workout, appears to be what Ritchson is now emphasizing as he prepares for a role he hopes to keep for a long time.

From ‘Reacher’ Season One Transformation To Maintenance Mode

When Ritchson landed the role in 2021, he needed to dramatically increase his size to convincingly portray Jack Reacher, reportedly gaining roughly 30 pounds of muscle while training for as much as two hours per day in preparation for the first season. That transformation came with real physical cost, and Ritchson has said the process left him with a broken acromioclavicular joint that required surgery.

At roughly 6-foot-5 in boots and around 108 kilograms, or approximately 238 pounds, Ritchson now closely resembles the outsized character described in Lee Child’s novels. Rather than allowing his body to shrink dramatically between seasons and rebuild it each time, he now maintains most of that size year round.

In April, he showed off his physique during the off-season and noted he remains only a few pounds lighter than his typical filming weight, framing his fitness as a year-round lifestyle rather than a role-specific transformation. That consistency is part of what has made the shift toward lighter, higher-volume training possible in the first place.

Alan Ritchson TRT Advocacy And The Case For Longevity

Central to Ritchson’s public explanation for his training shift is his openness about testosterone replacement therapy, which he began using a few months after ‘Reacher’ Season 1 wrapped. Ritchson has said the demanding production schedule left him unable to sustain his previous two-hour daily training routine, and that stress, fatigue, and the physical strain of the role left him with what he described as essentially no measurable testosterone by the time filming ended.

Speaking about why his training priorities have evolved, the actor explained that his approach is a long game, adding that he wants to continue playing Reacher for 15 years and has no interest in needing surgery after every season, and that testosterone helps make that possible. He has consistently rejected the idea that TRT replaced hard training, noting that he still works out five days a week and puts considerable effort into maintaining his physique.

Ritchson has described himself as a strong advocate for medically supervised TRT, particularly for men in their 40s and older, framing it as a potential mood stabilizer rather than simply a tool for building muscle. He has been careful to note that hormone therapy should always be evaluated by a qualified doctor rather than pursued independently, a distinction that has become more prominent as his openness on the subject has drawn both support and criticism online.

That balance between advocacy and caution has followed him through multiple interview cycles, even as scrutiny of his public image has intensified alongside his physical transformation.

What A Sustainable Physique Means For Reacher’s Future

Prime Video has already renewed ‘Reacher’ for a fifth season, meaning Ritchson will once again need to maintain the combination of size, strength and athleticism that has become synonymous with his version of the character. That reality appears to be shaping his training decisions as much as any single season’s demands.

Supporting a physique approaching Ritchson’s current size requires substantial nutritional intake alongside the training itself, with protein needs and total caloric requirements far higher than typical eating patterns. Maintaining that level of mass across months of production is less about any single dramatic effort and more about sustained daily commitment.

For now, his latest training routine demonstrates that maintaining one of television’s most recognizable physiques does not necessarily mean loading as many plates onto the bar as possible. It also suggests that Ritchson views his own body as something to manage carefully across a long career, rather than push to its limits every time a new season begins.

As ‘Reacher’ Season 4 continues to roll out, viewers who have watched Ritchson’s physical evolution across the show’s run may have their own thoughts on whether his lighter, higher-volume approach is the right long-term formula for keeping Jack Reacher believable on screen.