Studies have shown that people who eat a healthy, balanced breakfast in the morning are more alert and energetic than those who skip breakfast. Aim for foods high in protein, like eggs, tofu, yogurt, or peanut butter. Or choose nutrient-rich food options like oatmeal and fresh fruit. These foods will fuel your body through the day and give you the energy you need to stay awake and active. Caffeinated beverages can help you combat sleepiness and make you feel more wakeful and energetic. And drinking coffee or tea can bring plenty of health benefits, too. These naturally caffeinated beverages are chock full of antioxidants, and recent studies suggest that drinking coffee can even decrease your risk of developing depression.  Don't drink too much! Excessive caffeine consumption can cause anxiousness and irritability. Drinking too much coffee can also interfere with your ability to have a good night of sleep after you make it through the day.  Opt for coffee over energy drinks. An 8 oz. cup of coffee typically contains more caffeine than the same serving size of most energy drinks. Drinking enough water is important to maintain your body's natural functions, and dehydration can actually make you feel even more tired. The physical act of chewing keeps your body awake, and ice comes with the additional benefits of being refreshing and hydrating. Snacks high in protein and vitamins, like nuts or fresh fruit, can help give you an energy boost between meals when your body starts to drag. Even just a brief 15-20 minute nap can boost your energy levels and leave you feeling more alert, awake, and able to perform at work.  Don't nap for too long. Napping for more than 30 minutes can lead to increased grogginess after waking.  Remember that you may feel groggy for about 15 minutes after waking. It might be a good idea to drink coffee immediately after a nap. Your body needs most of its calories in the morning and afternoon. Give yourself the fuel you need when you need it most. Be sure to make healthy food choices....

TL;DR in Chinese:
吃早餐。 喝咖啡或茶。 保持水分。 吃冰块。 休息时吃一些零食。 如果可以的话，小憩一会。 吃一顿健康的午餐。