Regardless of your exercise program or level of performance, any increases in speed, flexibility, strength, resistance, repetitions, or sets should be very gradual. For example, if you are accustomed to doing twenty reps for two sets, you should not in one day change to fifty or sixty repetitions or do four sets. Your body is not ready for such abrupt changes and injuries may occur. To prevent injury and maximize your results, all gains should be gradual.