Wearing the right clothes can make a big difference when you exercise, but you don't need anything fancy. Here are some tips from the National Institute of Diabetes and Digestive and Kidney Diseases on what to wear:
Your exercise tops should be lightweight and loose fitting so you can move easily.
Your exercise clothing should be made of fabrics that absorb sweat and take it away from your skin.
Don't wear exercise clothing made of rubber or plastic. They can cause you to overheat.
If you're a woman, wear a good support bra.
In cold weather, wear a knit hat to keep you warm.
Wear sunscreen when you exercise outdoors, no matter what time of year.