I hope this is the best forum for this question: It’s become common knowledge that it’s best for weight loss/fat burning, to do cardio first thing in the morning, because of blood glucose and glycogen; but what’s the time window?
Sometimes I get up, have a cup of coffee, get dressed for the gym, and my business phone rings a couple times. it’s really easy to burn up 60-90 minutes (dammit!)… now I still haven’t eaten, but how long is too long to wait? If I get interrupted, when should I give up on the idea of cardio on an empty stomach, and actually eat something?