Rest Days

How many workout rest days do you need?
How can rest days improve your memory?
How can rest days improve your digestion?

Notes:
OECD research shows that more hours in the work week leads to less productivity.
https://www.inc.com/rhett-power/a-day-of-rest-12-scientific-reasons-it-works.html
https://www.brit.co/how-many-rest-days-per-week/