All exercisers should follow the principles of training used by competitive athletes. You will gain far more health benefits from intense exercise than from more casual exercise, and you will gain more strength and muscle growth. Athletes do not do the same workouts every day. If they did, they would not gain the increased strength, speed and endurance that are necessary for competition. They take an intense workout in which they feel a deep burning in their muscles, feel sore on the next day, and take lighter workouts until the muscle soreness goes away. Then they take their next intense workout.THE FIRST PRINCIPLE OF TRAINING - BACKGROUND BEFORE PEAKING: Never try to exercise at an intense pace when you start a new program. For example, if...