ResearchPeptides.com, the world's most sought-after and trusted forum site that tackles topics about peptides such as the human growth hormone (HGH), insulin-like growth factor 1 (IGF 1), selective androgen receptor modulators (SARMS), and a lot more, discusses the benefits of calorie restriction. In its medical sense, is usually referred to as dietary restriction (DR). According to ResearchPeptides.com, calorie restriction (CR) is a method that promises to extend the lifespan of an individual.