There are various possible reasons you are waking up at night according to Peter J Salzano a life coach and popular blogger. The following can be the possible reasons for your sleeplessness:

1. If you sleep in a room that is too hot, cold, noisy or bright, it might interrupt your sleep and you can wake up at midnight.

2. Anxiety can be another reason why you wake up at night.

3. Having fluids before sleeping can cause sleeplessness in the night.

4. According to Peter Salzano, few people have sleep apnea in which their breathing stops while they are asleep. Sleep apnea can be one of the many reasons for waking up at night.

5. The restless legs syndrome can be another reason for frequent waking up because of throbbing, itching and aching in the lower body.

According to Peter J Salzano, occasionally waking in the middle of the night is not necessarily an issue, however, if this happens frequently it should be addressed.