Gotta remember, Shea was basically asked to put on weight so he could stay at DE. He was drafted around 250ish wasn't he? I think when your goal is to simply put on weight, it's not going to always be "good". He was probably eating a ton of calories during the season and couldn't work out as much probably by design to rest from practices/games and heal from injuries. Now that he's playing LB, I think he's at a more natural weight for him. Also, as a former weight lifter, I dropped weight to get into a lower weight class for a bench press competition when I was in college, all while increasing my bench press a good 30-40lbs. I never had visible abs until I got under 11% body fat. I was typically around 13%, but got as low as 9%, and still didn't have a 6-pack. Only had 4, could never get the lower abs going. And yeah, genetics play a huge part in everything. Some people can just get bigger/toner than others without doing as much. My workout partner back in the day was physically more muscular to the eye than me, but I was 230lbs with 11% body fat and he was 195lbs with 9-10% body fat. So, the concerns with Shea coming out of the draft look to be true. He can't really add much to his frame. Whereas a guy like Idonije could play at anywhere from 270-300 in his career based on what the team needed, and he didn't look sloppy when he was heavier or too skinny when he was smaller.