the.com/invigorate
To pour fresh batteries into something that was running on fumes.
means To fill a person, idea, or system with renewed energy, life, and strength.
from From Latin vigor, liveliness, rooted in vigere, to thrive or be lively — the same vital spark behind vigil and vigorous.
Cold cousinCold plunges literally invigorate via adrenaline spikes.
Word familyShares roots with vigor, vigil, and vegetable.
OppositeEnervate, its drained and forgotten antonym.