Intermittent Fasting

https://www.youtube.com/watch?v=5U1IWr3cuKQ

https://www.verywellhealth.com/how-fasting-can-cause-a-headache-1719448

https://dofasting.com/blog/14-10-intermittent-fasting/

https://thefastingmethod.com/fasting-basics-common-side-effects-of-fasting/

https://www.zerofasting.com/start-your-year-start-your-timer/

https://www.zerofasting.com/when-to-eat/