[Markdogas]

I like to wear clothes made with Coolmax or DriFit. They are a very light polyester that wisk the moisture away from you skin. They keep you dryer, so you are cooler in the hot temps and warmer in the cold temps. (Wet clothes in cold temps could make you sick).

I also agree with the form fitting clothes. They prevent chaffing and provide extra support. If you're uncomfortable wearing tight clothes, you can always wear a looser layer over top.

Cotton can be the worst thing to wear, as you will be soaked when you're done. Cotton socks give my feet blisters on longer runs.