The hydration status of the body can generally be judged according to the degree of thirst, the frequency of urination, the volume and color of urine. 1. Thirst: The appearance of thirst is already a signal that the body is obviously dehydrated. Therefore, to avoid the appearance of thirst, you should take the initiative to drink water. 2. Frequency and volume of urination: When the body urinates less often and in a smaller volume than usual, it suggests that water intake is too low and the body may be in a state of dehydration. 3. Urine color: When water intake is sufficient, the normal color of urine is transparent yellow or light yellow. When the color of urine deepens and appears dark yellow, the body may be less water intake. In mild climates, the appropriate daily intake of water for adult males with low physical activity levels is 1700 ml; for females, it is 1500 ml. Drink water actively, in small amounts and frequently.