Waking at 3:30 AM
Waking up at the same time each night, like 3:30 AM, can stem from reinforced learning and consistent sleep cycles. Checking the clock during these awakenings strengthens the brain's association with that specific time, making it more likely to happen again. Removing clock faces from the bedroom can help break this cycle and promote better sleep.In this clip
From this podcast

Huberman Lab
Dr. Matt Walker: The Science of Dreams, Nightmares & Lucid Dreaming | Huberman Lab Guest Series
Related Questions
Why do I keep waking up at 3 o'clock?
What is the cause of waking up at 3:30 AM as discussed in the episode Dr. Matt Walker: The Science of Dreams, Nightmares & Lucid Dreaming | Huberman Lab Guest Series and the clip Waking at 3:30 AM?
Why did I start waking up at 3:30 or even 3:15 after shifting my schedule to a 4am wake-up from 6ish to 7ish?