Are you hard to fall asleep or wake up frequently at night? Do you feel bad mood, tired, cannot stay focused during daytime due to poor sleep quality and short duration? If yes, you may suffer from insomnia. Let’s know more reasons that can cause insomnia. 
(1) Irregular Sleep Pattern and Daytime Nap
Our brains have a sleep cycle and a wake cycle. Daytime nap and irregular sleep pattern can lead to insomnia. You should go to bed and wake up at the same time every day to establish and maintain a regular sleep schedule.
(2) Eat and Drink Alcohol, Caffeine Beverage
Both alcohol and caffeine can disturb your sleep significantly. You are difficult to initiate sleep or awake too often. Their impacts can last for several hours. Do not drink these beverages before you sleep. If you eat right before going to sleep, your digestive system is activated and may cause acid reflux and heartburn.
(3) Sleep Apnea
If you are suffering from sleep apnea, you cannot breathe well during sleeping. As you feel anxiety and uncomfortable, you are more difficult to fall asleep.
(4) Frequent Urination at Night
Frequent urination during bedtime may be caused by pressure and anxiety. Some people wake up 3-4 times at night to visit washroom. Frequent urination can affect your sleep quality and duration. You are hard and take time to fall asleep again. You may feel tired and cannot be focused during daytime. Do not drink before going to bed. Meditation and deep breathing can help you to relax.