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It's called OMAD (one meal a day), you can google it. In my experience, it's something you quickly get used to and has no negative effects (for me). You adjust and don't get hungry until the time comes (e.g. dinner). It's a form of intermittent fasting.

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I've done periods of time on OMAD throughout my life and one thing that would always get me is sleep. I'd wake up (not necessarily hungry) much too early, regardless of the time of my one meal. One trick that helped me was to break OMAD, and have a little bit of a slow releasing protein in the evenings before bed. My go to was low fat cottage cheese. Once I added that I was able to sleep through the night again.

This has been my experience as well. The first time I tried it I thought I was going to be miserable all day and have no energy. It ended being totally fine. I have this dull emptiness in my stomach but nothing that affects me in any way. And you are right, as soon as dinner rolls around my hunger increases dramatically.

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