HCG, or Human Chorionic Gonadotropin, is a hormone commonly used in bodybuilding and post-cycle therapy (PCT) to stimulate natural testosterone production. It works by mimicking the luteinizing hormone (LH), which signals the testes to produce more testosterone. HCG is particularly effective after anabolic steroid cycles to help restore testicular size, function, and overall hormonal balance. Ideal for athletes and bodybuilders looking to recover natural hormone levels and prevent testicular atrophy following intense steroid use.