It all depends on your starting point. If you are very
lean and have a lot of muscle mass, I would say no,
it's not possible. For the average person it is very
easy to do both at the same time naturally. Exhaust
your natural limits before resorting to drug use.
the two goals (muscle gain and fat loss) require nutritional approaches contradictory to each other, to gain you have to take in surplus of cals, to loose you have to create defecite
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