Every time i wear gloves while running, i find that i pull my fingers and thumb into the center portion of the glove and ball my hand up in a fist so these appendages are against eachother and warm eachother up. Which brings me wonder, why aren't runner's mittens more widespread? Lately i just run with a pair of merino wool socks in lieu of the gloves/mittens. and their ok but a bit draftier than i would like.