Something about the food they get now compared to in the past, look at the challenges they are having them compete in. The challenges are much more rough and longer and physical. It'd take forever to do the following but how long between "meals" has one contestant gone without getting one? Meaning, each contestant seems to get a "meal" every six days or so. Not many, if any, go two weeks without a "meal" while competing in these tougher challenges. I'd bet the doctors in the past have told CBS that if they are going to do longer, tougher, more, challenges, then they have to feed them more. If you watch the first few seasons of the show, the challenges are minor league compared to what they do now.