I hate being cold. The worst part is cold hands and feet, and these are common when you are out running for 1 1/2-2 hours. Knowing this, my mom made me a pair of mittens made from a wool sweater and polar fleece. She wanted to make sure that my wrists stayed warm so she made them really long. I teased her that it will be just fine to run with my tank top and mittens. (They also double as sleeping bags for those really cold nights)