This is utter bollocks. I have been doing IF for 2.5 years and I have never been in better shape. The idea isn't to fast all day and then pig out, you fast and then go back to eating like nothing has happened.
Training fasted is also better as the blood isn't in you're stomach helping your...
My question was why do people say to do interval training because it doesn't raise cortisol like running on a treadmill for an hour does. Why doesn't interval training have any negative effects on cortisol?
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