Different types of proteins impact muscle growth with varying amino acid profiles and digestibility. Whey protein is quickly absorbed and is ideal for muscle recovery post-exercise due to its high leucine content. Conversely, casein protein digests slowly, providing a steady release of amino acids, making it suitable for nighttime recovery. Plant-based proteins, while beneficial, may lack certain essential amino acids but can be combined for a complete profile. Ensuring adequate protein intake is crucial for muscle synthesis and support during training.