Not only does a good sweat session help you detox even more, but it's also a must if you want to get rid of any extra holiday pounds. But if you spent the better part of December on various relatives' sofas, you'll want to start slow so you don't end up in too much pain.

Try some gentle stretching, a long walk around your neighborhood (or at the gym if it's too cold), or a beginner's yoga class. Then you can increase the intensity of your workouts as your fitness level improves.

Even those of us with the best intentions are going to have bad days. We'll ruin our diets polishing off the leftover Christmas candy or skip yoga three days in a row. It happens, but the important thing is to move on.

Don't beat yourself up over a bad food decision; just aim to make your next meal or snack healthier. And if you're not feeling up to the gym, whether it's due to sore muscles or a case of the winter lazies, take a few moments to stretch your muscles and walk around your house. Even a small move like putting on your running shoes may motivate you more than you think. Just remember that good habits don't form overnight, they take time.

Have you been sticking with a healthier eating plan and become a regular at the gym? It's time to treat yourself for being so good. But don't go the traditional route with a diet-busting dinner. Instead, indulge in some swanky new workout gear, a muscle-soothing massage, or even something as simple as a new lipstick. Whatever it is, make sure it works with your health and fitness goals, not against them.