The secret techniques on earth can be activated by drinking a prepared serum which rapidly unlocks the potential in the body increasing the user's strength by at most ten percent. But it possesses a very deadly side effect.
Utilising secret techniques was suicidal. During a life and death situation, secret techniques could be used to turn the situation around only if used properly and unexpectedly, catching the opponent off guard.
Despite activating a secret technique, if the opponent wasn't defeated during that duration, a momentary lapse of weakness would occur within the body that would last for more than a day.
Therefore, if the opponent wasn't defeated during the activation of the technique, the user would have no ability to resist any further and would be defeated in the process.