Muscle map
What's that muscle called, what does it do, and which machine trains it?
What's that muscle called, what does it do, and which machine trains it?
Version 2026.11.0
What's newStraightens your knee. Four muscles that meet at the kneecap.
Let your knees travel forward over your toes. It's safe, and it's what loads the quads.
Hover one to see everything else it works.
Kit from the catalog that trains it. Hover to see what else each one hits.