SARMs, or Selective Androgen Receptor Modulators, are a class of therapeutic compounds that have similar properties to anabolic steroids but are more selective in their action, targeting specific androgen receptors in the body. They were initially developed to treat conditions like muscle wasting, osteoporosis, and hormonal disorders without causing the same level of androgenic side effects as traditional anabolic steroids. However, they have gained popularity in the fitness and bodybuilding communities for their potential to enhance muscle growth and performance.