Ive heard theres some validity to that. My brother in law is one of those strongest man contest guys and he uses a CPAP machine when he sleeps even though he doesnt have sleep apnea. Sleep and oxyengation is apparently a important part of building muscle mass.
I always figured rumors around Beefcake Byrson and steroids was going to be a thing eventually. Just took him winning a major to bring it out of the closest more. If Bryson were any other athlete in another sport the suspicions would be through the roof after putting on much mass as he has - as quickly as he did. But It seems like he's largely avoided any critical quesitons about it to this point.
Looks like i replied to this topic about a month ago.
Was having issues with the game and decided it was time to take a little break.
Since then I've played 26 rounds with a high score of 88 and a low score of 73. The index has gone from a 6.5 to a 9.2.
Actually, in the last 2 weeks the index has gone up to a 10.2. but has slowly been coming back down to a 9.2.
Anyway, Mondays round was a 73, and todays round was a 82. Just no consistency.
I heard a new one today. Somebody on the radio was talking about how Bryson DeChambeau was able to put on so much mass. According to the particular talking head it was because Bryson knows "how to breath".
I guess the idea is if you breath in a certain way you are able to increase the restfulness of your sleep and the effectiveness of your digestion. Both of these in turn help you recover from your workouts. This, supposedly, led to his putting on extra muscle. I forgot the method of breathing he claims works for this so I quickly googled it. Sure enough its called breathing with your brain in a parasympathetic state.
So, there's your answer.