Ultimate Testo Explosion Make sure you are eating enough calories in a day. There are various online calculators that may help you find your needs for how much muscle you want to gain. Use these calculators, and alter your diet to get plenty of carbs, protein, and other vital nutrients to help build your muscles.If you intend to supplement your muscle building with creatine, be careful, particularly when using them for a long time. Those with kidney problems should not take creatine at all. Additional known complications include muscle cramps and compartment syndrome. Creatine supplements have even been linked with heart arrhythmia. Teenagers could be at even more risk than adults. Always take nutritional supplements cautiously and only as directed.If you do extreme cardio workouts or want to train for a marathon, don’t try to build bigger muscles. If you engage in too much cardio, it may hurt your ability to gain muscle. If you want to build muscle, focus the bulk of your efforts of your strength-training regimen.