1.S-23 not only boosted muscle mass, but also reduced fat mass, as studied. SAR Ms have a bit of a 'soft' image in the doping world. They don't stimulate muscle growth in the way that anabolic steroid do, but many users say that they are safer.

2.There are no studies yet that confirm this suspicion. But that S23 is not one of the safer SAR Ms - we'd be willing to wager a bottle of BCAAs on that.

3.S23 halts the production of sperm in the testes. In fact it does this so well that the researchers suspect S23 might be a good candidate for a male contraceptive. If this is the case it would probably have to be part of a cocktail that also contains an estradiol analogue, the researchers discovered. The lab animals lost their libido when they were given S23 on its own, and only recovered this when they were given estradiol benzoate together with the S23.