Brown sugar and ginger are warm and hot, so if normal people drink more, it will cause fire. People with internal heat should not take it. Cold people can serve, but the best time is not at night. Because ginger and brown sugar water has the role of spleen Yang warm stomach, so it is best to be taken in the morning at 9:00, when the spleen meridian is the most prosperous, is Yang, at this time to take a better spleen Yang warm stomach, can get twice the result with half the effort. At night is yin, at this time, no matter what nature of people, should not take ginger brown sugar water, so when taking one is not effective, two is easy to cause fire evil, three is against the time of day, easy to make the night dreams.