New research has found that 45 minutes of daily exercise can reduce the negative metabolic effects from "holiday indulgence" (short term overeating and inactivity). Even if it won't keep all the extra weight off, it will help your body manage blood sugar better and reduce harmful changes in fat tissue genes. A daily walk, skating or other activity will be gift that'll last a lifetime.
PositiveTip: Start a new Christmas tradition of regular family exercise together!