Their answer, in short: Yes, a hot drink can cool you down, but only in specific circumstances. “If you drink a hot drink, it does result in a lower amount of heat stored inside your body, provided the additional sweat that's produced when you drink the hot drink can evaporate,” Jay says.
Drinking warm water in the morning helps flushing out the toxins. However, drinking warm water increases the body temperature, which improves the metabolic rate . It helps in breaking the food molecules in your intestine and helps in better digestion as well as absorption of nutrients.