The omniscients are also free from all kinds of pains and diseases. Mental diseases do not touch them at all. Even physical diseases are temporary visitors. They cause no defilement. So much electricity is active in their body, that the atoms of disease are simply incinerated.
Cool energy is used for favour, and hot for subdual.
This energy which can act both as a boon and a curse, is important from many points of view. That is why, despite the risks involved, the sadhak continually makes efforts to develop and awaken this power.