Do your knees hurt? Do you feel the burn in your thighs when you work out. Would you like to tighten up or have more strength. Lets discuss how working the leg muscles can make other body parts feel better. Get ready it's Body By Angel Thursday. Do your knees hurt? Do you feel the burn in your thighs when you work out. Would you like to tighten up or have more strength. Lets discuss how working the leg muscles can make other body parts feel better. Get ready it's Body By Angel Thursday.