re: Zion gained 8 pounds of muscle in one week working out

There are recorded instances of people gaining seemingly impossible amounts of muscle due to being injured, experiencing extreme muscle atrophy, then restarting a workout regimen.

But it takes someone who had a great deal of muscle to begin with. Zion kinda fits that model.

That being said I seriously doubt it was 8lbs of pure muscle in a week. I could see him maybe gaining 8 pounds, some of which was muscle, his first week or so of working out intensely after his injury.