The glycogen thing makes sense. When you are on as much shit as they are on, is it possible to overtrain? For someone who isn't on a ton of shit, I would be reluctant to train very hard for a couple of reasons. One, to avoid going catabolic. Two because I don't have a great amount of motivation to train at all when I'm cutting real hard. Three because there is an increased chance of injury when you are lower in BF. I don't think I buy into the striations thing. They are gonna be there as a result of fat loss anyway.