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How to Stay in Shape After 40: From a Former Navy SEAL

How to Stay in Shape After 40: From a Former Navy SEAL

A former Navy SEAL explains why staying in shape after 40 is less about age than mindset.

By Hook & Barrel Staff
April 9, 2026
5 Minute Read

Staying in shape after 40 rarely falls apart in one dramatic moment. More often, it happens slowly, through nagging injuries, quiet compromises and lowered standards.

The exact day escapes me, but I remember the morning I noticed it. I was getting out of bed, still nursing a nagging shoulder and knee injury, when I caught my side profile in the bathroom mirror. Half awake, I saw something I hadn’t seen before and thought:

Oh my God! … I have back fat!

Not dramatic. No rock bottom. Just a quiet realization. That’s how it usually happens.

Over time, the belly rounds out. The abs fade. A suit feels tighter. Shirt buttons spread. Nothing alarming on its own, just a slow boil. And that’s the danger.

That's the thing with the Navy SEAL mindset. After twelve years of service and a career built on mental toughness and elite fitness, that realisation hit differently.

One of the keys to staying in shape after turning 40 is to remain active.

Why Men Over 40 Start Lowering Their Standards

When change happens fast, you respond. When it happens slowly, you adapt. You justify. You negotiate. And that’s when the lie creeps in: This is just how it is now, you tell yourself.

I started negotiating with myself in my mid-50s. Small allowances. Lowered expectations.

Here’s the thing: I’m a former Navy SEAL. Twelve years of service. I’ve competed in ultra-endurance events, won Discovery Channel’s One Man Army and built a career around mental toughness. I’ve done hard things most people can’t imagine.

But now I wasn’t holding myself to the same standards I taught others, not because I didn’t believe in them, but because it felt easier to soften them for myself.

“I’m injured, so I’ll skip the harder movement.”

Another key to fitness after 40 is hanging out with people who have similar goals.

“I’ll go slower today.”

“At my age, it’s normal to have a little extra weight.”

I wasn’t quitting. I was settling.

The cost wasn’t self-respect. That was still there. What slipped were my tolerances and standards.

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Why Staying in Shape After 40 Still Matters

Physically, I noticed it first in mobility. Things started hurting. Recovery from injuries took longer. Conditioning dropped.

Then one day, after time away from training, I returned to the gym and had a moment that stopped me cold: I’m actually out of shape. That’s not a sentence I’m used to saying. The real wake-up call wasn’t embarrassment. It was leadership.

I realized I had become the athlete I would now have to coach ... not the captain, teammate or leader I would willingly follow. That hit hard. Because leadership isn’t about what you know, it’s about what you embody.

Getting older doesn't mean setting a lower bar for how you look and feel, just realistic ones.

Somewhere along the way, I had allowed my identity to drift. I was still capable and experienced, but no longer living in alignment with the standards I believed in.

That’s when the lie broke.

How to Stay in Shape After 40: Train Smarter, Not Harder

Aging doesn’t require lower standards. It requires new ones. I wasn’t protecting my body; I was protecting comfort and avoiding soreness. I was also avoiding the work of redefining what good looks like now.

The first negotiation I stopped wasn’t dramatic. It was simple:

“I’m too tired or too busy to train.”

That excuse had to go. Not so I could train harder, but so I could train smarter. Years of experience matter. Wisdom matters. You can still get after it, but with purpose.

Mobility. Consistency. Intentional discomfort. Smart stress, applied with intent, helps avoid burnout. You can stay in shape after 40 and enjoy doing it.

The most dangerous lie men tell themselves after 40 isn’t about age or decline; it’s the belief that negotiation is maturity.

Maturity is choosing standards you can defend, not standards you excuse.

So, here’s the quiet challenge. Pick one standard on which you’ve been negotiating with yourself ... and stop. Not tomorrow. Not after things feel better. Now.

READ MORE: Burn Fat With Eric McCormack’s Zone Fitness Training Guide

Staying in Shape After 40 Means Ending the Negotiation

That’s our definition of discipline.

Not punishment. Not intensity. But doing the right thing at the right time, especially when it would be easier not to. At Trident Mindset, we call that choosing the wrench.

Surrounding yourself with the right friends not only helps you meet your goals ... it's also FUN!

It doesn’t always mean doing the hardest thing. Sometimes the wrench is honesty. Sometimes it’s raising a standard instead of lowering it, so other things in life become easier, steadier and more sustainable.

READ MORE: Mindset for Victory: Turn Setbacks Into Success

Why the Right Tribe Matters After 40

One of the most important wrenches for staying in shape after 40 wasn’t physical; it was community. Pick an event, a group of like-minded friends, older, younger, it doesn’t matter. Tribe wins.

I sought out and helped create a small group of men in the same stage of life. Men willing to admit where their standards have slipped and to commit to quietly raising them again.

I did this because isolation accelerates decline, and the right tribe reinforces standards.

Age doesn’t take men out.

Comfort does, one negotiation at a time.

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