the.com/exhausting
The state of running on fumes while the to-do list refuels.
means So draining of energy, patience, or strength that it leaves you wiped out.
from From Latin exhaurire, to draw out completely, as if scooping a well dry bucket by bucket until nothing remains.
Engine cousinShares roots with exhaust pipe, both meaning emptied out.
Not exhaustiveExhausting tires you; exhaustive covers everything.
Body mathMental fatigue drains glucose much like physical effort.