Chronopharmacology is branch of biological science which deals with daily life, sleep and wake, day and night, feeding and fasting and other effects. we can manage many diseases including diabetes, obesity, and CVDs with help of circadian rhythms or clocks,
you can watch my recent video on chronopharmacology for all the information
https://www.youtube.com/watch?v=ofZwgiX4gow&t=402s