1. Again, most importantly, control your portions. Over-eating is the best way to gain weight.
2. Continue to eat smaller meals more often throughout the day. I know that this is difficult during the holiday season, but it is not impossible. This way of eating speeds our metabolism, and makes it easier for us to burn more calories.
3. Continue to exercise. Doing consistent resistance training is the best way to burn fat calories and maintain lean mass at the same time. Don't let the holidays be a vacation from working out. In fact, it's probably the most important time to be working out! Pick up those weights!
4. Perform aerobic exercise consistently, especially after resistance training. After resistance training, our bodies are depleted of glycogen, our muscles' primary fuel source. Therefore, by doing low level aerobic exercise immediately after resistance training, we are able to burn more fat. Also, by staggering your intensity (interval training) on days in which you are not weight training, you use both a lower heart rate which will burn more fat, and a higher heart rate, which will burn more calories. We want both. This is a win win situation.
5. Avoid excessive starchy carbohydrates and simple sugars at inactive times of the day. OK, I know this is asking for a lot, but think twice before you eat that stuffing right before bed time. Consuming these kinds of foods at inactive times will result in carbohydrates not being utilized for energy, and therefore converting to fat. This is one of the biggest reasons for the obesity epidemic in this country.
6. Get plenty of rest. This may seem like a no brainer, but I actually find a lot of people have trouble sleeping this time of year. Your body needs adequate rest, otherwise it will not recover properly, and this can have a negative impact on your workouts. You also burn a lot of calories while you are sleeping. This is probably one of the most important yet most unrecognized principles to follow.
7. Stay hydrated! This is another unrecognized but very important principle to follow. Water is the most abundant nutrient in our bodies. Without, we would not even exist. If you are working out, you are going to perspire, and therefore lose water. It then becomes even more important to replace the water that you have lost. Multiplying your body weight by .55 will provide a good estimate of how many ounces of water an exerciser should consume in a day. Drinking water throughout the day can act as a valuable step in helping to mobilize fat.
8. Make sure you're getting your essential fats, namely the omega 3 and omega 6 fats. You can achieve this by taking a tablespoon of flaxseed oil every morning with your breakfast. You can also find them in fresh produce, fish, and even certain animal meats. If necessary, you can also take fish oil as a supplement.