Incontinence is also one of the main reasons of the diseases. There are three things which are of vital importance to life: restraint over the continence, food and sleep. Over indulgence in sexual acts, excessive eating and excessive sleep all the three of them become the causes of the diseases. Self-restraint means keeping these three activities under check. This is another name of having control over one's brain. He, who has learnt to control his brain, remains healthy.
When a person gets into a frenzy of anger, he falls sick. The reason is the tension in the brain. When there is tension in the brain, the sinews become weak, and in that case, the person keeps on getting some disease or the other. According to Ayurveda, anger leads to the aggravation of the bile, which increases acidity and the result is ulcer.