dirtypair said:
Wait, what? You speak of ordinary kniebeugen, right?
I do easily 40/min, what is so praiseworthy of 25?
And for what purpose do 1 needs a chair?
Confused I am.
First of all, if you can do a full one-legged squat with no support the right way 40 times, that's great! You might want to try holding weights if power training is your goal.
However, one-legged squats are pretty tough if you're not used to them and not everyone has your body type, weight, or sense of balance.
The chair is for when you are supremely tired, shaking, losing your balance but you want some support to keep going. Similar to a spotter when doing a bench press, it helps you even when you don't have the strength left so that you can eventually surpass your limits in the future.