20 years' old striker, best player of course, full morale, highest rating, gets special treat upon a low stretching with 86% energy.
6 days or 15 red packs.
You ever heard of anyone in shape who tore his knee cartilage apart just warming up?
Or is it just the shameless routines programmed by the devs to suck out the red packs and compel you into money spending? "want to improve your players? get red packs to heal them all the time".