King Piccolo (Dragon Ball series) unleashing all of his life force to reach his full power, at the cost of shortening his lifespan.
Son Goku (Dragon Ball series) unleashing his life force to power up.
Master Son (Gintama) using Qi Gong to manipulate his lifespan, releasing his stored up youth to enhance himself at the cost of shortening his lifespan.
Tsunade (Naruto) using Ninja Art Creation Rebirth — Strength of a Hundred Technique to release her stored life force for intense regeneration at the cost of shortening her lifespan proportionally.
Might Guy (Naruto) opening all Eight Gates to release all of his life force for devastating effects, though afterwards, death awaited him.
Lao G (One Piece) releasing the vast quantities of life energy he stored up during his youth for a power up.
Using Meteoric Burst, Boros (One-Punch Man) unleashes all of his latent energy to boost his body to speed and power beyond its limit, at the cost of putting immense burden on his body and even shortening his lifespan.