You consider yourself to be in better than average shape. You run several times a week for health and fitness and maybe do an occasional fun run on the weekend. Some friends come into town for the holidays and you decide to go skiing. No problem, you're in great shape, right? Wrong. After a day on the slopes you feel like you've been run over by Santa's sleigh and all his reindeer. What's going on?

You may be in great shape, for the sort of exercise you do routinely. But if that's all you do, day after day, you may be setting yourself up for injury or mental burnout and that is not a good way to get fit. What can help prevent injury and burnout? Cross training.

Cross training is a great way to condition different muscle groups, develop a new set of skills, and reduce boredom that creeps in after months of the same exercise routines. Cross training also allows you the ability to vary the stress placed on specific muscles or even your cardiovascular system. After months of the same movements your body becomes extremely efficient performing those movements, and while that is great for competition, it limits the amount of overall fitness you possess and reduces the actual conditioning you get while training; rather than continuing to improve, you simply maintain a certain level of fitness. .

The term cross training refers to a training routine that involves several different forms of exercise. While it is necessary for an athlete to train specifically for their sport if they want to excel, for most exercisers cross training is a beneficial training method for maintaining a high level of overall fitness. For example, you may use both biking and swimming each week to improve your overall aerobic capacity.