Warriors, are those who have opened a Life Spring within their bodies, liquefying the Star Force and infusing it into the Life Spring. And when warriors fight desperately, they have a very effective tactic, which is to burn their Life Spring.
By burning the Life Spring, they experience a regression of a small realm, but during the process of burning the Life Spring, the Martial Artist's strength can be significantly increased, at least by two tiers.
Under normal circumstances, even for a genius in the Warrior Realm, it takes two to three years to open each Life Spring and expand it. Moreover, the difficulty of reopening a burned Life Spring becomes several times harder.
Therefore, while acquiring surging power from burning the Life Spring is exhilarating, the price is almost unbearably painful. Unless absolutely necessary, no warrior would choose to do so.