Before reading into this article, acknowledge the fact that keeping up your figure is often hard and rarely fun. However, you know how important it is. Luckily, getting fit doesn’t have to involve an extreme fitness program like P90X. It just isn’t that hard. You might even find that you enjoy it. If you want to build muscle mass, you must do resistance training. It’s as simple as that. Cardio exercise will not build muscle bulk, though it is healthy….