I started doing HIIT. I figured I should give it a try. My goal at the moment is to maximize weight loss, minimize muscle loss, and get back into shape (1.5 years off, torn achilles) Anyway I started doing HIIT 3 times a week. I was jogging/walking at least 2.5 miles a day (half up hill/half down hill) Then I thought to myself... Would I not be getting the best of both worlds if I either did that on off HIIT days and /or possibly opposite my HIIT training in the same day. (i.e. 2.5 miles in the morning, HIIT in the evening) Is there any reason not to do this? Ive been also trying to limit myself to 5 days a week, its always tempting to get another run in on the off days and burn 300-500 more calories each extra day....