【Four good habits in the morning】
1. Drink one glass of warm water: it can promote the circulation of blood of whole body and promise the metabolism of cells.
2. Use warm water to rinse your mouth: it can eliminate the most pathogenic microorganism of mouth and prevent the disease.
3. Use cold water to wash your face: it is a kind of effective exercise of upper respiratory mucosal blood vessel and can enhance resistance.
4. Open the window to ventilate: it can not only keep the fresh air, but also prevent respiratory infection.