21. "Although it is winter, luckily there haven’t been many snow days — and even a few somewhat warm temps. Instead of just strolling through the park on a Sunday afternoon, hit the hills. Or when you visit friends in the country, go for a hike before brunch. Ten minutes equals about 100 calories; add a backpack with water and snacks into the mix, and that number is instantly raised." —RB

22. "Sure, snow days are great for Netflix and takeout, but it’s also an opportunity to burn fat. Hit a park and build a snowman. Or, if you are feeling particularly peppy (or you're home visiting the 'rents), pull out a shovel and clean up the driveway. You can burn an extra 100 calories in just 15 minutes. (Just make sure you bend your knees when lifting the snow to protect your back, and change up the sides you pitch to every few minutes.) — RB