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Did you know that waking up at 3 or 4 a.m. is a clear sign 's' of… See more. – Tastyrecipes
Nighttime digestion can also wake you up.
A heavy dinner, eaten too late, or high in sugar can disrupt sleep. During the night, the body continues to digest, which can cause:
Micro-awakenings
A feeling of warmth
Digestive discomfort
Waking up between 3 and 4 a.m. 
Temperature, light, noise: invisible triggers
At this time of night, sleep is lighter:
A slight noise
A draft
A change of position
The light from a phone
A biological awakening
… can be enough to wake you from deep sleep.Sleep therapy consultation
What can you do to avoid these nighttime awakenings? (Simple tips)
Avoid screens 1 hour before bed
Eat a light dinner
Go to bed at regular times
Deep breathing or relaxation before bed
Cool, dark, and quiet room
If you wake up: don’t look at the time
Avoid ruminating → breathe slowly 
When should you consult a doctor?
If these awakenings become:
Daily
Accompanied by anxiety
Associated with intense daytime fatigue
Linked to palpitations or pain
It is advisable to speak to a healthcare professional.
