4. Sleep
Sleeping properly and getting an adequate number of sleeping hours is just as vital as exercising and eating right for the development of your body. Think of it in this way, you are pushing your body through physical hardship, you need those ample hours of sleep to let the body rest properly. Rest helps your growth hormones profile and thereby allows your muscles to recover faster. If you are well-rested, you can train more and grow those muscles even faster. Try to get peaceful sleep for 7 to 9 hours a day.