If you ever feel insecure about your arms when you look in the mirror or put on a sleeveless shirt, you’re not alone. A lot of women can relate—many people look up ways on how to lose arm fat online, and there are tons of workout videos claiming to zero in on the underarms. But there is *a lot* of misunderstanding and incorrect info out there surrounding how to lose arm fat. While it’s totally natural to want to tone different parts of your body and look fit, women do need a certain amount of fat to be healthy. At the very least, 12 percent of their total weight should…