Because when you really think about it, it makes perfect sense.
Muscle doesn't build itself.
Even on your off days, your body is still repairing tissue, growing lean muscle, and getting ready to perform again ... which means it still needs protein.
Whether you're working toward building lean muscle, fat loss, or just better recovery in general, hitting your protein goal every day will help you stay on track so you can get the REAL results you're after.