Gelatin is a protein derived from collagen found in animal bones and connective tissues, commonly sourced from cows or pigs. It contains amino acids such as glycine and proline, which play a role in supporting skin, joints, and connective tissue health. Because of this, some people associate gelatin with improved physical recovery and vitality, especially in active men. However, these effects are supportive rather than dramatic, and gelatin is not a hormone booster or a performance-enhancing substance. Horse gelatin trick for men