Article in English: If you want to wake up early, then you have to plan to go to bed early, or at least earlier than you expected to. One thing you have to do to make this happen is to avoid caffeine in the evenings — ideally, you should avoid it after noon. Even if you may be feeling tired, there are other ways to get that extra energy back, and caffeine should only be a last resort. If you want to go to bed and to wake up without a problem, then skip the caffeine in the afternoon and evening the next time you have a craving. Though a glass of wine or a beer may help you initially pass out after a long day, alcohol actually makes it harder for you to fall into a deep sleep, which is why you can pass out for 8 hours after drinking alcohol and still wake up feeling tired and achy. You can have a glass of wine with dinner, but make sure you don't have anything to drink for at least 2-3 hours before you go to bed, or it'll be harder for you to get to bed, and therefore, harder to get up early. If you eat your dinner late and pass out an hour later, it'll be harder for you to fall asleep because your body will still be digesting the food. Eat a healthy mix of veggies, a protein such as fish or chicken, and healthy carbs, such as brown rice or whole grain pasta. Make sure you get enough food that you don't wake up hungry in the middle of the night, but that you don't eat so much that you feel stuffed and can't fall asleep.  Avoid eating foods that are very spicy, heavy, or creamy, or your body will have a harder time digesting them and it'll be even harder for you to fall asleep. While staying hydrated throughout your day is important, you should limit the amount of water you drink after 7 pm, or around 3-4 hours before bed. You don't want to have to keep waking up to use the bathroom in the middle of the night. If you want to make it as easy as possible for yourself to fall asleep, then you should use your bed for sleep and sleep only. If you do work in your bed, watch TV in bed, or even fight with your best friend over the phone in...

Summary in Indonesian:
Hindari kafein. Hindari alkohol setidaknya 2-3 jam sebelum tidur. Makanan sajian yang mengenyangkan namun sehat 2-3 jam sebelum tidur. Gunakan tempat tidur Anda hanya untuk tidur. Matikan semua rangsangan visual setidaknya satu jam sebelum tidur. Miliki rutinitas bersantai yang menenangkan. Tidur dan bangun pada waktu yang sama tiap hari. Letakkan jam alarm Anda jauh dari jangkauan. Visualisasikan diri Anda bangun dengan mudah. Bersiaplah untuk tidur yang menenangkan.