If you get a chance, have a read of Mick Rathbone's book "The Smell of Football". Staying in top shape should be every prem footballer's number 1 priority, and literally every resource necessary for them to do so is available to them free of charge. Several parts of their working week are specifically devoted to maximising their health and fitness, so the only thing that can stop them is a lack of effort (or injury). It might not be easy, but they have a better opportunity than anyone else so can only blame themselves if they aren't fit.
