If your back hurts when you do plank,

A. 1

It could be a posture, but it could be because I still lack core strength

Lady 5 years ago 0

OK

A. 2

It's because my stomach and waist are weak
I think it'd be good to start with an easy workout

Lady 5 years ago 0

OK

A. 4

If you put your knees on the ground when you do plank, you can get into position more easily
If it's your first time, it's better to do it like this

Gentleman 5 years ago 0

OK