Post-workout supplements are designed to replenish nutrients lost during exercise and aid in muscle recovery. They typically contain a mix of amino acids, which are the building blocks of muscle, as well as ingredients to rehydrate the body and replace lost nutrients. The document provides details on the ingredients and benefits of 10 top post-workout supplement options, including popular brands like Evln Nutrition Re-Bld, MHP Dark Matter, BSN AminoX, and others.