Leucine

Leucine is one of the nine essential amino acids that our bodies can't make on their own, so we need to get it from the food we eat. It's mainly found in protein-rich foods like meat, dairy products, and beans. Leucine is super important for building new muscle tissue because it helps kickstart the process of muscle protein synthesis. That's why it's often called the 'main' amino acid, as it plays a big role in muscle growth and recovery. Plus, leucine helps keep our blood sugar levels in check by managing insulin in our bodies during and after exercise. Overall, it's a crucial part of staying healthy and strong.