Beta-alanine is an amino acid produced in the liver. Beta-alanine has seen a surge in popularity over the last few years. Of all the products contained in the Supplement Database, 36% of them contain beta-alanine, making it the second most popular ingredient behind caffeine.
For longer exercise bouts, the body uses an aerobic energy pathway; this requires oxygen. This pathway creates a lot more ATP, but requires more time. This pathway is ideal for long endurance activities such as running, swimming, rowing, biking, or less intensive sports. The question is whether creatine plays a significant role in this energy pathway.