Relax back into against the wall, keeping your body in a nice straight line from your head to your heels. Do not let your hips drop. Then repeat the press out, driving off your elbows. Do not arch your low back as you press out. Also, make sure not to shrug your shoulders. The further from the wall that you walk your feet out, the harder the move will be.
The skin also serves as a release point for heat. (See “Why Does My Face Turn Red When I Exercise?” for more on that.) When you exercise, your muscles generate a lot of heat, which you have to give up to the environment so your body temperature doesn’t get too high, Hackney says. The heat in the muscle transfers to the blood, which shuttles it to the skin; it can then escape into the atmosphere.