Bicep curls are a great way to get rid of pesky arm fat by burning fat and building the muscles underneath the fat. This is a crucial part of learning how to burn fat on your arm; you can’t just reduce calories b/c you’ll still have flabby, but smaller arms. For toned arms that you feel good about showing off you need strength training exercises like bicep curls to build lean muscles while you burn away the excess fat.
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.