You have no idea what you are talking about. A lineman might be able to gain 30 lbs, not a defensive back.
Or maybe the badgers just have that great of strength and conditioning coaches....
You still have to drink the "Badger Juice".
I watched a 180 pound defensive back, a supreme high school athlete, turn into a 210 pound college safety/linebacker in one year. It might be possible, but not likely without some help from the juice.
From what I have heard from players, is that they are issued "Badger Juice"during their freshman year
and that they are "strongly suggested" to drink. It might be protein and carbos, who knows....
