Weight training, paired with regular aerobic |exercise|, can increase your strength and muscle endurance, more so than any other single |exercise|. Weight training works out several different muscle groups in a short amount of time. The basic principle involves overload: contracting a muscle group against added resistance. The muscles are developed when the overload placed on the muscles in increased over a period of time. Weight training, in and of itself, is not an aerobic |exercise| and does not provide cardiovascular benefits because of the stop-and-start movements. Circuit training, on the other hand, involves going from machine to machine at a gym with minimal rest in between and gives the |heart| and |lungs| a workout.
Your exact weight training |exercise| routine should be developed by an |exercise| specialist. This person will train you in how to position yourself, how to lift so as to prevent strain or injury, which weights to use, and how many repetitions and sets to do. Also, your trainer will reinforce the necessity of scheduling. Each muscle needs a full day's rest in-between workouts; either |exercise| different muscles on successive days (upper body one day, lower body the next), or space workouts at least two days apart.
