Not the GP, but it's quite easy to get used to not having breakfast. Any sluggishness you may observe (you may not either) would usually be temporary. Intermitt

Not the GP, but it's quite easy to get used to not having breakfast. Any sluggishness you may observe (you may not either) would usually be temporary. Intermittent fasting allows one to have (almost) zero calorie beverages, like water, black tea, herbal tea, black coffee, etc., without any sugar. If you feel hungry initially, just have one or two of these until your next meal to adjust. Just keep in mind that hunger pangs in the morning will usually return if you have start having breakfast anytime for a few days. The body usually goes with how it's been treated. As always, this is not professional medical advice. Please take care while experimenting.