Is this the same thing as "moosles"?
He is still carrying a lot of moosle in the second pic.
My first thought as well.
You don't add fibers, but you do build new muscle architecture which stays with you long term. Which is why you can bounce back so fast once you built it the first time. How fast some of these guys bounce back is absolutely insane. Milos claimed Flex came to him weighing about 200lbs skinny-fat 3 weeks out from a show. A couple of days out from the show Milos claimed he was like 30lbs heavier and shredded but unfortunately he ended up in the hospital with kidney failure. Its probably exaggerated, but you can come back real fast. He also claimed Mustafa Mohammed came to him also 3 weeks out looking untrained with 12% body fat and then either won the show or placed in the top, I forget.
Milos' approach is insane, even with the food, post-workout can be "as many carbs as you can possibly cram in without puking." Intravenous insulin pre- and post-workout. Get up in the middle of the night and have 90 grams of protein. Jordan Peters went to Milos for a few weeks and had to abort as he felt like he was dying and he couldn't breathe. And JP is a madman.
Milos is 64 and still alive and outwardly looks great. He's also done a ton of rec drugs. I remember when Nasser said Milos was crying to him why him and other friends didn't stop him from injecting cocaine.