There are accessories that can make exercise easier, and sometimes buying a new toy can add some much-needed fun to your routine. With apps like RunKeeper and Nike+, your smartphone is capable of tracking your vitals and progress. Wrist weights can add a new dimension to your workout, and, if you exercise at night, a headlamp can help you see what’s in front of you so you don’t trip.
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.