Calisthenics is more than brute strength. It is skill-oriented and your personal practice depending on the skills.
Many are stiff and can't even reach the floor when bending forward.
The third and last workout of my beginner's program gets your legs trembling.
Legs can produce tremendous amounts of forces - therefore getting the machinery running is crucial.
Everybody should be able to squat - let's change that!
I bet you stumbled across the push/pull/legs split somewhere before on your training's journey.