Issues like cost, availability, side effects (such as nausea), and the simple fact that obesity is a complex condition drive the search for other solutions
You do not need to train like a competitive bodybuilder
Pentadecapeptide BPC 157 Enhances the Growth Hormone Receptor Expression in Tendon Fibroblasts, Chang CH, Tsai WC, Hsu YH, Pang JH, Molecules, 2014 Nov 19;19(11):1906619077
Degradation of Neurotransmitters by MAO and COMT SAM is also used to degrade neurotransmitters via monoamine oxidase (MAO) and catechol-O-methyltransferase (COMT)
BMC Oral Health 16 , 60 (2016)
This is why supplementation is quite common, especially in specific groups of people