Between exercises necessarily kneads. Unacceptable seat or standing still - in this case the blood "stagnant" in the muscles. Make it circulate, continuing to move between sets.
Do each exercise you do, focusing primarily on technique, but in any case the value of the working weight. The correct execution of the exercise involves exactly the muscles that need, and you will get a gain in muscle mass, while the use of heavy weights with violations of technology may even lead to injury.
Be sure to use locks to the wrist, knee and elbow joints, as well as gymnastic belt. The fact is that if you train without them, sooner or later you have to deal with the crumbling joints, and this can occur both during bodybuilding and through big time after you leave the sport.
In any case, do not allow formation of "laggards" muscle groups. Your body will look asymmetrical, in addition, various degrees of development of different parts of the body is fraught with unnecessary strain on the joints.
Drink plenty of fluids. During heavy exercise the body loses a lot of water, and this supply must be restored. During bulking do not deny yourself food, while trying to eat as much protein, especially due to sports nutrition. Remember also about the vitamins needed for your body, and about calcium necessary for your bones.
Remember that the muscles do not grow during exercise, and during the holidays. Make sure that each day you slept at least nine hours. This time should be sufficient to restore muscle for new workouts.