Most of this could be me. When I was younger I'd fast or eat very little for up to 4-5 days and it gave me a productivity boost. I stopped after I took it too

Most of this could be me. When I was younger I'd fast or eat very little for up to 4-5 days and it gave me a productivity boost. I stopped after I took it too far(ended up shaking and nauseus after a bad combo of not completely keto + lifting weights) but have gradually stopped eating breakfasts at all and try to eat a very minimal lunch (a handful of peanuts or a slice of bread) multiple times a week. Just skipping breakfast means I'm less tired than I used to be. If I can get around to skipping lunch (I like the break and it is social) I guess it would improve my workday even more.