For the pure fat experience I suggest corticosteroids, lithium or a random antipsychotic. Insulin is also very useful here, but a tad dangerous.
If it has to be muscle mass, then anabolic steroids of course are preferable. But beta adrenergic agonists like clenbuterol also seem to have some effect.
They all have uncomfortable side effects, especially the fatty-inducing ones. But insulin stands out for being able to kill you very quickly from a moderate overdose.
For the pure fat experience I suggest corticosteroids, lithium or a random antipsychotic. Insulin is also very useful here, but a tad dangerous.
If it has to be muscle mass, then anabolic steroids of course are preferable. But beta adrenergic agonists like clenbuterol also seem to have some effect.
And there are many more.