I am following a upper/lower body split routine, lifting on monday (upper), tuesday (lower), thursday (upper) and friday (lower). I want to incorporate at least 2 HIIT sessions a week to keep me fit. When should I do these?
I am following a upper/lower body split routine, lifting on monday (upper), tuesday (lower), thursday (upper) and friday (lower). I want to incorporate at least 2 HIIT sessions a week to keep me fit. When should I do these?