Lots of NFL fans see enormous offensive and defensive linemen and assume these are dudes who just love to eat and who would be 300 pounds regardless of whether they were playing in the NFL. Sure, some guys are like that, but there are plenty of players who have to fight to stay big and beefy. Just look at Joe Thomas.
The former Browns left tackle stands 6'6" and was listed at 312 pounds during his final NFL season in 2017. The 33-year-old future Hall of Famer called it a career after tearing his triceps in the seventh game of last season and has now lost about 50 pounds.