Somewhere along the way, tough started meaning something specific. Never stop. Never slow down. Answer the email at 11pm, because stopping first would mean you weren't committed enough. Exhaustion became proof of how much you cared, instead of a signal that something needed to change.
That is not what the Marine Corps actually trains. And the person who told us that, Forte CEO Vineet Rajan, spent over a decade living it.
The evidence points the same way. The Marine Corps Martial Arts Program runs on the motto "One Mind, Any Weapon," and a USC study of 121 Marines and sailors found that performance on physical training standards did not predict who finished a demanding 25-day course. Toughness, in the Marine Corps, is a trained mental capacity, built in reps, under load, with people who know what they are building. It can be trained outside the Corps too, and that is what Mental Fitness training is for.
- A 2020 USC study of 121 Marines and sailors found no correlation between finishing a 25-day specialized course and performance on physical training standards. Trainees who described themselves as extroverted and high in positive affect were the most likely to finish (USC Institute for Creative Technologies, 2020).
- The Marine Corps Martial Arts Program's motto is "One Mind, Any Weapon": the tool in hand changes, and the trained mind is what carries over (Marines.mil).
- Global employee engagement fell to 20% in 2025, and manager engagement has dropped nine percentage points since 2022 (Gallup, 2026).
- Mental toughness is trained, not inherited. Forte builds it across four Pillars, Composition, Capacity, Flexibility, and Endurance, alongside a real human Coach.
Toughness Was Never About the Body, Even in the Marine Corps
Physical fitness is a core requirement in the Marine Corps. It is not what predicts who makes it through the hardest training. A 2020 study from the USC Center for Body Computing tracked 121 Marines and sailors through a 25-day specialized training course and found no correlation between finishing and performance on physical training standards, such as hikes or aquatic training (USC Institute for Creative Technologies, 2020). Trainees who described themselves as extroverted and high in positive affect were the most likely to complete it, and 64 of the 121 did.
Vineet Rajan, Forte's CEO, lived that finding before it was published. "I was surprised that actually the training that I had before the Marine Corps and in the Marine Corps trained me really well to be able to perform at the highest levels when everything was on the line," he said. "It's actually the mental component that drove success."
If one of the toughest, most physically demanding institutions in the country does not define toughness as grinding through pain, it is worth asking why so much workplace culture still does.
It's actually the mental component that drove success.
Vineet Rajan, Co-founder and CEO, ForteWhere Vineet's Definition of Toughness Actually Came From
Vineet did not arrive at this idea in a classroom. He enlisted at 18, but the decision was made two years earlier. "I was a 16-year-old senior when 9/11 happened," he said. "I knew that things weren't right in the world and I wanted to contribute in my own way, and I thought the idea that was a really good one was to try to join the Marines." The Marine Corps does not let 16-year-olds enlist, even in wartime. He got in a few years later, expecting the hardest physical experience of his life.
What he found instead was a martial arts instructor course, optional, and by his own account, brutal. "Over weeks and months of getting beat up, candidly, you learn that actually the most powerful thing you have is your mind," he said. "It isn't your rifle or your pistol or your K-bar or whatever other tool you might have at your disposal. It's the mindset that helps you perform in ways that you never imagined."
Over weeks and months of getting beat up, candidly, you learn that actually the most powerful thing you have is your mind.
Vineet Rajan, Co-founder and CEO, ForteThe motto of the Marine Corps Martial Arts Program is still "One Mind, Any Weapon" (Marines.mil). The Corps describes it as covering the physical, mental, and character attributes a Marine needs, and the part that travels with you is the mind. Not "never feel pain." Not "never stop." The weapon changes. The trained mind stays with you no matter what is in your hand.
Burnout Culture Measures Toughness by How Long You Can Ignore Yourself
Christina Maslach and her colleagues define burnout through three dimensions: exhaustion, cynicism, and a reduced sense of accomplishment, describing it as "a prolonged response to chronic emotional and interpersonal stressors on the job" (Maslach, Schaufeli, and Leiter, Annual Review of Psychology, 2001). Burnout is what happens when someone's capacity to sustain effort runs out with no recovery built in.
That is the part most burnout culture gets backwards. It measures toughness by how long someone could ignore what was happening inside them. You can grind through an entire year, hit every number, show up to every meeting, and still be completely gone inside. Still functioning. Still drifting the whole time.
Global employee engagement fell to 20% in 2025, the second straight year of decline and the lowest level since 2020 (Gallup, 2026). Since 2022, manager engagement has dropped by nine percentage points, while engagement among individual contributors has remained largely stable (Gallup, 2026). The people responsible for holding a team together are the group losing the most ground.
Composition, Capacity, Flexibility, Endurance: The Same Four Things That Course Was Built to Train
What Vineet built in that course was not a trait he arrived with. It was built on purpose, through a specific process, by people whose entire job was to build it in him. That is the piece burnout culture skips. It treats toughness as something you either have or do not, so when someone struggles, the story becomes that something is wrong with them.
The Marine Corps does not operate that way. Nobody shows up mentally tough. It is trained in reps, under load, with people who know what they are building. That is the reasoning behind why Forte is built around Mental Fitness instead of a version of wellness that treats resilience as a fixed trait.
Forte trains it across four Pillars:
Composition
Knowing what you are made of: your values, your identity, your sense of direction. Without it, every hard day feels personal.
Capacity
Your ability to recover: sleep, stress regulation, the space between a trigger and your response. It is trainable, not fixed.
Flexibility
Cognitive and emotional agility: the ability to adapt when a situation shifts instead of catastrophizing when it does.
Endurance
Sustained motivation and connection across months and years, not just one hard stretch.
Same structure the instructor course was building. Just without anyone needing to get beaten up to build it.
See what training these four Pillars looks like for your own team. Book a demo and we'll show you how it works end to end.
You Don't Need a Drill Instructor to Build What Got Him Through It
You do not need to be a Marine to train the thing that carried Vineet through the hardest moments of that course. You need a similar structure: a pause before you react instead of running on autopilot, a clear anchor so pressure does not get to decide who you are that day, people actually training alongside you instead of just watching from a distance, and real recovery you do not feel guilty taking.
That last piece is where most workplace support quietly fails. A benefit built for crisis will always miss the person who is fine on paper and drifting underneath. Forte pairs people with a real human Coach, not a chatbot or a screening questionnaire, because the mindset that carried Vineet through a war zone is the same one that gets someone through a Tuesday that went sideways. It has to be built in relationship, not delivered as a feature.
Want to start training this on your own? Take the free Five Days to Train Within PACER plan and build the pause, anchor and recovery habits in five days.
Watch the Full Conversation
Vineet unpacks this story, and what the Marine Corps actually trained in him, in the video below.
If your team is running on the same broken definition of toughness, the one that measures commitment by how long someone can ignore what they are carrying, it is worth training a different one. Book a demo at getforte.com and see how Forte helps organizations build the kind of Mental Fitness that holds up under real pressure.






