Answer: Phosphoprotein from case is the only simple protein out of all of them, so Myosin from muscle, Collagen from connective, and Keratin from hair are not simple proteins
Explanation:
Warming up is a way of preparing your body for exercise. As your body temperature increases you'll loosen your joints and increase blood flow to your muscles. That means less stress on joints and tendons. Warm, well-lubricated joints prepare the body to execute sudden and/or explosive movements with ease.