The cortisol can block testosterone and waste the efforts you are putting toward your muscle building. If you keep your workouts under sixty minutes, you will reap the rewards of your efforts faster and enjoy the benefits of your hard work.Bio Rocket Blast Always stretch thoroughly after working out to give your muscles the best chance to repair and grow properly. Someone who is under forty should hold each stretch at least thirty seconds. If you are over 40, hold the stretch for a minimum of 60 seconds. This way you'll be less likely to become injured as you complete your exercises.Bio Rocket Blast Ramp up your food intake on days when you will be doing your muscle-building workouts. You need to eat your calories about 60 minutes before you start your routine. That is not to say that you should overindulge on exercise days, only that you ought to eat a bit more than usual, if you intend to go to the gym for a workout.Bio Rocket Blast Stick to a realistic schedule when you are trying to build muscle to reduce the risk of injury. Anyone who is new to weight lifting should workout only two times a week, while those who are more experienced can workout.