This will sound totally counterintuitive, but if you want to lose muscle quickly in GTA San Andreas: Definitive Edition, then the first thing you should probably do is go to the nearest gym and work out a little bit. Unless you’ve already got zero fat, in which case don’t go to the gym. But if you do have any fat at all, then you need to burn that off before you’ll be able to lose any muscle. So, go to the gym and carefully work out until your fat is all gone, but no longer than that.
The next stage of the process of losing muscle is not fast, and there’s no way to speed it up without using cheats. You have to eat nothing for a couple of days so that CJ gets hungry. Once you’ve got no food left in your belly to convert into muscle, then you can move onto the final stage, which is going to the gym and working out again. Now that you’ve got no fat and an empty stomach, exercise will reduce your muscle level. As before, though, be careful about it. If you exercise too hard, you might lose all your muscles and start eating into your health.
It might also sound counterintuitive to want to reduce the muscle in the first place, but doing so does have one major benefit. Helena Wankstein will only date you if you have between 15% and 20% muscle, and if you date Helena, she’ll grant you access to her tool shed, her Bandito, and her Rural Clothes, all of which are much more innocent than they sound, we swear.