4. Beware of moisture 脚部不干燥，导致脚气或脚底疣
Foot scourges like athlete's foot and plantar warts thrive in water – so you should do your best to keep your feet protected and dry. If you take a shower after your workout at the gym, try to remember to bring flip flops with you.

But even if you don't, don't despair: You can wipe your feet down with a little alcohol to make sure all is clear, says Dr. Youner.

When you're wearing shoes, make sure your feet stay dry, she urges. "The best protective thing is just to put some cornstarch in your closed shoes," says Dr. Yourner. "It protects you from all sorts of things that can break down your skin." This is especially important with boots.