If the purpose of your fitness training routine is to gain weight rather than lose it, go light on the cardiovascular exercise and focus on weight training. Not only that, it's a good idea to eat high-carbohydrate meals before training to fuel the extra muscle building you're looking for.

Don't fool yourself into thinking that fitness training requires a great deal of money and your own personal trainer. It's nice if you can get one, but with a little imagination and some research you can come up with your own fitness training course that costs you nothing more than a little willpower.

You can find out all you need to know about fitness training by doing some basic research, which you should do anyway. Fitness training doesn't have to be fancy: all you're trying to do is get yourself in better shape, not win the Mr. or Ms. Universe pageant.