刷牙时间。应在每次进食后3分钟内，因为饭后3分钟口腔内的细菌开始分解食物残渣中的酸性物质，腐蚀溶解牙釉质。美容时间。皮肤的新陈代谢在夜间12时至凌晨6时最为旺盛，睡前使用护肤保养品效果最佳。锻炼身体时间。早晨锻炼应避开六七点钟空气污染的高峰期。在上午10时和下午 Brushing time. Should be within 3 minutes after each meal, because 3 minutes after eating bacteria in the mouth began to break down the acid residues in food residues, corrosive dissolution of enamel. Beauty time. Skin metabolism in the evening at 12 o’clock to 6 o’clock the most exuberant, the best use of skin care products before going to bed. Exercise time. Morning exercise should avoid the peak of air pollution at six or seven o’clock. At 10 am and in the afternoon