Wear flip-flops in the shower
Floors in the gym’s shower stalls are germ central. If you’re standing in the stall barefoot and have even the smallest cut in your skin, you can easily introduce a fungus and end up with an infection such as athlete’s foot. Wear flip-flops in the shower so your feet are never in direct contact with the floor. That goes for the floors in the changeroom and sauna, too, since a fungal infection can happen anywhere when you’re barefoot.