I don't care who you are or what you are on, no one is gaining 10lbs of muscle in a month. Even a skinny beginner consuming all the protein they want and lifting with an optimal program is going to gain maybe 3-4 pounds max and that would be an outlier.
Can you can 10lbs in a month- of course and it isn't all that difficult. But it definitely isn't going to be all muscle.
This. Glad someone is being real. I mean, the only exception I can think if here is maybe someone who got really big (especially with gear), stopped lifting and lost it all, then returned to lifting and got immense "memory gains". Still, it would be unlikely for most.
If you gain 10 pounds in a month and didn't gain at least 6 pounds of fat then get in your car and drive, as fast as you can, to the Dr. You probably have an aggressively growing tumor.
People who claim they have gained 10+ pounds of muscle in a month have a high probability that they:
1. Gained 10 pounds and think it was muscle but ignore the fat gain.
2. Did not really track how long it took to recoup memory or newbie gains.
3. Are outright lying.