I was going to take the day off and swim, but the gym was closed due to the blizzard of the century. Instead I did 3.1 super slow miles, through the snow. My pace was laughable, but still, no pain in the hamstring. That is something. I was worried that running through the snow would aggravate the injury. Instead, the soft surface and slow pace, interrupted periodically by the need to avoid a snowplow, or climb through a drift, seemed to be okay.