Flexor

A flexor is a muscle serving to bend a body part such as the limb. Now, there is this thing called Achilles tendinitis. It's when you overuse an effected limb. Luckily, I'm not an athlete. The reason be that, athletes are the ones that mostly get affected. Barely no one else but athletes get it. I guess maybe old people that love to exercise may get it. Ok, bye!