Caffeine, electrolytes, BCAAs, and beetroot extract are all common ingredients in pre-workout mixes, but one stands out for its infamous tingles: beta-alanine. Beta-alanine is a non-essential amino ...

Taurine is an amino sulfonic acid. Not technically an amino acid, but it walks, talks, and acts like one in the body. It’s found in high concentrations in the brain, heart, and skeletal muscle, and ...