Sarms are compounds that bind to the androgen receptor in a selective manner. They achieve this selectivity while avoiding binding to the other areas of the biology. 

No. Sarms are scientifically termed; non-steroidal compounds.

Technically, they are ligands that bind to various androgen receptors (ARs) to varying degrees depending on their chemical makeup. This, in turn, creates different biological effects specific to the areas the individual compound is targeting. 

Selective Androgen Receptor Modulators: Physique 400 (LGD-4033), Tight (RAD140), Decavar (Ostarine), GH Pep (MK-677) and Stanazine (S4) all bind to Androgen Receptors (ARs) increasing protein synthesis.

Some of these protein-activating Sarms, in addition, have shown to stimulate metabolic pathways, resulting in a simultaneous increase of protein synthesis and breakdown in lipids. 

Products Cardio Shred (Cardarine) and Hyper Lean (SR9009) activate the metabolic pathways to enhance both the cardiovascular system while simultaneously creating an internal environment as though the research subject has been conducting consistent cardiovascular activity.  

It is because of this cardiovascular environment creation that these compounds have been dubbed in the scientific community as ‘exercise in a bottle’.

Furthermore, studies showed that when the research subjects conducted cardiovascular activity paired with the above compounds, further lipid reduction resulted.