Testo Drive 365Remember that you need lots of extra calories to build muscles. There are several online calculators that help to determine caloric need when building muscle. Use these calculators, and alter your diet to get plenty of carbs, protein, and other vital nutrients to help build your muscles. Testo Drive 365Creatine supplements should be used carefully, especially if they are used for several months or more. Those with kidney problems should not take creatine at all. These supplements have also been linked to muscle compartment syndrome, muscle cramps, and heart arrhythmia. Youths and teens face particular risks from these as well. Only take these supplements under the care of a doctor.