I'm also glad in regards to this too, this is the thing if fighters can still go and keep themselves in good shape and they're still holding up then there's really no reason in regards to these things either, I mean of course with Cub he's been fighting a long time so you're body can tire out and get beat up over the years however when fighters haven't been as long it's not as much of an issue so it's not really the age thing as such most of the time, it's more to do with how long you've been in the game.
He says it's just recovery sometimes that takes a little while now but that's about it.