https://www.sciencealert.com/scientists-rejuvenate-the-memories-of-elderly-mice-by-injecting-them-with-young-mouse-cerebrospinal-fluid
https://www.sciencealert.com/scientists-rejuvenate-the-memories-of-elderly-mice-by-injecting-them-with-young-mouse-cerebrospinal-fluid
Poop also works!
Strangely my new business hasn't gotten any orders from Peter Thiel yet.
Instructions unclear. Put poop in my brain.