One keto dieter, Shelley Kearney, told Insider.com she struggled with "getting over the sluggish, flu-like symptoms was the hardest and I suffered with headaches a lot."
The first time you run past your previous stopping point without feeling winded is paradigm-shifting. It feels like freedom from a self-induced body prison.
There's many myths that have been spread around for years in regard to sleep. Hearing the debunking of some of these may be quite a comforting relief to you.