Your sleep is made up of four stages, which repeat in cycles throughout the night. These include:
1. Light Sleep (Stages 1 & 2): Your body starts to relax, and your heart rate slows. Waking up in this stage is easy and refreshing.
2. Deep Sleep (Stage 3): This is when your body repairs muscles and tissues. Waking up in deep sleep can leave you feeling groggy and disoriented.
3. REM Sleep (Stage 4): This is the most restorative sleep stage, where your brain processes memories, dreams occur, and you recharge mentally.
If you're woken up during REM sleep, you’ll feel exhausted, even if you’ve slept for hours.
A normal sleep cycle lasts about 90 minutes and repeats 4–6 times per night. The problem with regular alarms? They don’t consider where you are in your sleep cycle—they just wake you up suddenly, often in deep or REM sleep.
That’s where this clock changes everything. Its sunrise simulation gently wakes you up when your body is naturally ready, so you start your day feeling refreshed, not drained.