True, prevention of cold is very important, especially for children and the elderly. If possible, do not use heaters around the child. If you have to, then use an oil heater. They do not eliminate humanity from the room. Do not run them continuously. Stop by running an hour, two hours. Similarly, turn off the heater about 15 minutes before going outside, otherwise, the temperature difference inside and outside the room can harm the child. In this season, give such supplements to children, which have high protein, high carbohydrate, and little fat. Do not feed them too much. In this season, eat fruits rich in vitamin-C, such as amla, orange, etc., eat a spoonful of Chyawanprash before bed every day, it increases immunity.