10 Hours of Walking vs. 10 Minutes of Weighted Squats

Intensity, not duration, builds volume

Research consistently shows that short, intense squat sessions build more muscle than many hours of walking.
That's why people who walk long distances every day often end up with slimmer-looking legs.
On the other hand, if you hit squats or stair climbing hard and often, your legs can become firmer and fuller.

Why the difference? Let's compare it to vehicles.

Walking is like a scooter

The goal is to go a long way, so a small engine is enough.
Your body mainly uses muscles built for endurance, so as body fat drops, your legs can look slimmer.

Squats are like a dump truck

To move a heavy load, even over a short distance, you need a powerful engine. Your body adapts by building muscle to produce more force. That's how legs become firmer and more shapely.
In the end, the difference is "exercise for lasting" versus "exercise for force."

No heavy equipment? No problem.

Slow squats, single-leg squats, jump squats and stair climbing alone can give your legs plenty of stimulus. But to keep progressing, gradually increase the weight or the reps.
Walking builds legs that last; squats build legs that are strong.
Choose the exercise that matches the leg shape you want.