Nightfall in Hindi is called "स्वप्नदोष" (swapnadosh) . It is a condition where a man experiences involuntary ejaculation of semen during sleep. This is a natural process and is not considered a disease or a disorder. However, if it occurs frequently, it can lead to physical and mental weakness. There are various home remedies and treatments available to prevent nightfall, such as practicing good sleep hygiene, avoiding spicy and oily foods, and doing exercises that strengthen the pelvic muscles. It is important to consult a doctor if nightfall is causing significant distress or affecting daily life.