Anonymous wrote:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7468742/
There can be losses in muscle mass. Doing resistance exercises can attenuate muscle loss.
I sometimes have a no carb breakfast of an egg with extra egg whites to boost my protein intake with minimal insulin release as an alternative to a longer fast.
Anonymous wrote:No, in fact the opposite is true.
The most prominent negative affect is that you are grumpy and can't participate in breakfasts and brunch. :p