In fact, so many women hate their upper arms that they’re actually seeking surgery to get rid of it. Nearly 25,000 women received upper arm lifts—a cosmetic surgery procedure that reduces drooping skin and tightens the underlying tissue to give the arm more definition—in 2016. That number is up 4,959 percent since 2000, according to the American Society of Plastic Surgeons.
Use small weights to do weighted punches. Pick up a small, 1 or 2 pound weight in each hand and stand with your feet hip-width apart. Bring your hands up in front of your face with your palms facing each other. Punch your right fist forward without locking your arm, then quickly pull it back as you shoot your left fist upward. Alternate the exercise this way for 60 seconds, as fast as you can.
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.