Good Position For Abs

Action on lumbar curvature of the psoas muscle Psoas muscles have other functions than to be powerful flexors of hip. They put the lumbar spine in lordosis, which increases the arch. I read a Frederic Delavier’s book « Strength Training Anatomy »…

Knee Instability

I read a Frederic Delavier’s book « Strength Training Anatomy » and I learned good stuff. When the knee extended, external and internal lateral ligaments stretched and prevent rotation of the joint. Standing on one foot, knee wedged in extension, which means…

How To Do Squat

I read a Frederic Delavier’s book « Strength Training Anatomy » and I learned good stuff. Squat is the #1 exercise for bodybuilding because it works a lot of the muscular system and is great for the cardiovascular system. Squat allows to…