The reason I would have a shake at 10:00 would be because I have class in the morning untill 11:00. Would it be ok to do my HIIT as I have it scheduled above with a 1/2 scoop of whey before or should I eat something when I get back and do my HIIT later? I'm just not sure if the 10:00 shake and 11:30 1/2 scoop of whey would prevent muscle loss since I would be doing HIIT an hour and half after my 10:00 shake. Would I have enough food in me from my 7:00 and 10:00 meals to prevent muscle loss?