Men's Fitness They say that December is the hardest month of the year to stay on top of exercise, but it doesn't have to be. No matter what you do to stay fit -- run, walk, cycle, weight train, kickbox, etc. -- there are five hard and fast rules to remember that most trainers swear by to keep their clients on track and in shape.
1. Imagine your fitness goals paying off. The biggest mistake most people make is forgetting why they're exercising in the first place.