I tried these the other day because i read that they don't cause lower back pain, but by the time i finished my 3rd set my lower back was quite sore. as far as i know i did not round my back.
anyone know what the problem might be? could it just boil down to the fact that i have a weak lower back?
since i train at home with limited equipment / space, i don't really do direct work for my lower back... i have a pretty strong core from doing weighted planks but that about all the attention my lower back gets.
any feedback would be great.