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Sleep occurs in 90-minute cycles. Waking between cycles is biologically normal - you just do not usually remember it. When stress is elevated, these brief awakenings become full wake-ups. Once awake, clock-watching and frustration activate your stress response, making it even harder to return to sleep.
Yes. Waking briefly between sleep cycles is biologically normal. It only becomes a problem when you cannot return to sleep regularly.
Your initial sleep drive is strongest at bedtime. After a few hours of sleep, that drive is partially spent. Adding frustration or anxiety about being awake further activates your brain.
Browse all sleep & night anxiety articles, explore mental health guides, see "Is it normal?" articles, get condition-specific support, or read the Paula Blog.
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