What is L-Histidine? L-histidine is an essential amino acid that must be obtained through dietary sources and supplements. It is also one of the 23 proteinogenic amino acids, which means it can be used to synthesize proteins. L-histidine is a precursor for histamine, which plays an essential ro …

Caffeine is good for training of all kinds - weight lifting, cardio, sprinting, and lots of other athletic sports. The effects of caffeine can improve your motivation and push you to try harder. You will get stronger faster if you use caffeine. The best caffeine pills will increase endurance a …