Does fasting give you headaches? What do you do about it?
I’ve been doing 20:4, but at about hour 18 I start getting a headache.
Yes!! Been on IF since 2 weeks and get massive headaches around noon. After going through this subreddit, the most popular advice was water + salt. Did that and I can confirm it works. I typically have warm water + salt + lemon.
The headache is usually due to sodium deficiency and hence salt.