Gosh there’s an interesting divide here between the camp that tries to hack their body (skip lunch, protein only, heavy caffeine use, methylphenidate) and those that adjust to their body (napping, walking/other exercise, adjusting scheduling to allow for a slump).

This is just my opinion but the first group is full of terrible ideas that will leave you exhausted/starving at the end of your day while prioritizing work over life - while the second group is giving their body a rest and will likely have more energy at the end of the day. It’s not worth working yourself into an early grave.