Hey there so I have been on a keto diet for two and a half months now. I have been doing empty stomach cardio low intensity for an hour to an hour and a half in the morning. My question is can I do high intensity interval training on an empty stomach and not worry about losing muscle while in ketosis? I used to do spin class for 45 minutes and I stopped it when I started Keto because I have been told that you will lose muscle. Any advice you could give would be greatly appreciated thank you Curtis