And squat until your thighs are almost

[veli mas]

And squat until your thighs are almost parallel to the floor, then push back up to the starting position, fully heated. * Targeted muscle pure muscle gain group Primary: quadriceps (front thigh muscles), hamstrings (back thigh

stop and rest for a second and repeat. This exercise is tiring for the lower body so make sure you are muscles) and glutes (buttock muscles). Secondary muscle group are back muscles and shoulder some . 

http://healthnbeautyfacts.com/pure-muscle-gain/