Terrible story..... many of these OL guys are not in very good shape, carrying lots of very bad pounds, with visible flab showing.... Being borderline obese, and working out in heat is not a good combination even for someone young.
In the Kill era lots of the OL looked very out of shape. The Mahtomedi kid who is on KFAN, Tommy Olson lost some insane amount of weight once he quit playing, and he never looked all that fit in a uniform either. Back in the steroid days the linemen relied less on fat to maintain weight, and as we know the Mason teams were looking for athletic lean linemen so that was a whole different thing. Lots of these NFL guys like Matt Birk shed incredible amounts of weight as well after retiring. Carrying all that bad weight for 10 plus years as NFL player cannot be healthy.
I think the line play under Fleck can only be a huge improvement over what we saw in recent years, regardless of what happens.