The 10 skills that define real fitness — and why most gyms only train two or three of them
CrossFit Una Stamus · September 2026 · 6 min read
Ask ten different gyms what "fitness" means, and you'll probably get ten different answers. A powerlifting gym will tell you it's about strength. A running club will tell you it's about endurance. A yoga studio will tell you it's about flexibility. Each of them is right — and each of them is only telling you part of the story.
CrossFit answered this question differently, back in 2002, with something far more complete: a list of 10 general physical skills that together define true fitness. Not one or two. All ten.
At CrossFit Una Stamus, we don't just know this list — we program around it, every single week. Here's what it is, and why training all ten instead of just a favorite few is what actually sets us apart.
The 10 general physical skills
These skills fall into three tiers. The first four are "organic" — they require your tissue itself to physically adapt. The middle two blend physical and neurological development. The last four are almost entirely neurological, built through repeated practice rather than brute effort.
1 · Cardiovascular/Respiratory Endurance - Your body's ability to gather, process, and deliver oxygen.
2 · Stamina - Your ability to process, deliver, store, and use energy over time.
3 · Strength - Your muscles' ability to apply force.
4 · Flexibility - Your ability to move a joint through its full range of motion.
5 · Power - Applying maximum force in the shortest possible time.
6 · Speed - Minimizing the time it takes to repeat a movement.
7 · Coordination - Combining several distinct movements into one smooth motion.
8 · Agility - Minimizing the time it takes to switch from one movement to another.
9 · Balance - Controlling your center of gravity over your base of support.
10 · Accuracy - Controlling movement in a given direction or at a given intensity.
Look at that list, and one thing becomes obvious fast: no single style of training develops all ten. A marathoner has incredible cardiovascular endurance and stamina — and has often sacrificed strength and power to get there. A powerlifter has tremendous strength and power — and often has limited endurance and mobility. Each has made a deliberate trade-off to excel at one thing.
That's a smart choice if your goal is a single sport. But it's the wrong choice if your goal is being ready for whatever life actually throws at you.
Why most gyms only train a few of these
Here's the honest truth about most fitness programs: they're built around whichever two or three skills are easiest to sell, easiest to program, or most fun to film for social media.
A typical globo-gym is built almost entirely around strength and a little bit of cardiovascular endurance — rows of machines and a wall of cardio equipment, with almost nothing built in for balance, agility, coordination, or accuracy. A spin studio is all cardiovascular endurance and stamina, with essentially zero strength or power. A bootcamp class might touch stamina and a bit of strength, but rarely trains true power, speed, or accuracy in any structured way.
None of that is wrong, exactly. It's just incomplete. And incomplete fitness has a way of showing up right when you need it least — the strong person who can't catch their balance, the marathoner who throws out their back moving a couch, the person with great cardio who can't open a stuck jar.
You are only as fit as your weakest skill. A powerlifter who can't run half a mile and a yogi who can't deadlift their own body weight have both made the same mistake — just in opposite directions.
How we actually program for all 10
This is where CrossFit Una Stamus does something genuinely different. Our programming isn't built around one favorite skill. It's built to touch all ten, on purpose, across every week.
- Endurance and stamina — through rowing, running, biking, and longer conditioning pieces that build a real engine
- Strength — through squats, deadlifts, presses, and progressive barbell work that builds power you can actually use
- Flexibility — built into warm-ups, mobility work, and full-range movement standards in every lift
- Power and speed — through Olympic lifting, jumps, sprints, and explosive movement that trains your body to move fast under load
- Coordination, agility, balance, and accuracy — through gymnastics movements, jump rope, kettlebell work, and complex movement patterns that force your brain and body to work together
Nobody hits all ten skills equally in a single workout — that's not how it works, and no honest gym would claim otherwise. But across a week, and across months of training, our programming is deliberately built so every skill gets real attention. Not by accident. By design.
Why this is the whole point of functional fitness
Here's why this matters more than it might seem: real life never announces in advance which skill it's about to demand of you.
A friend invites you to go paddleboarding — that's balance and coordination. A family member needs help moving furniture — that's strength and power. A storm knocks a tree branch into your yard — that's stamina and agility. You catch yourself before a fall — that's balance, speed, and accuracy, all firing at once, with zero warning.
You don't get to choose which skill life tests. So the smartest approach isn't picking a favorite and getting great at it. It's building genuine, well-rounded competency across all ten — so whatever life asks, you're actually ready for it.
That's not a trendy fitness philosophy. It's the whole reason CrossFit exists, and it's exactly what we build into your programming, every single week, at CrossFit Una Stamus.
Complete fitness, not convenient fitness
It would be easier for us to just pick two or three skills and build our whole gym around them. It would probably be easier to market, too. But it wouldn't actually make you fit — not in the way that matters when life shows up uninvited.
So we don't take the easy road. We program for all 10 general physical skills, every week, because that's what real, complete, ready-for-anything fitness actually requires.
Una Stamus. Together We Stand — trained for everything, not just the easy parts.
Curious what training for all 10 skills actually feels like? Schedule a free No Sweat Intro and experience programming built for complete fitness, not just a favorite few. Book at crossfitunastamus.com
