Studies show that staying in the first stage of sleep for at least 15 seconds triples the chance of insight. If you wake up too early or enter deep sleep, the effect disappears.
The first sleep stage typically lasts up to 5 minutes. By default, the timer is set to 15 seconds. If no insight occurs during the day after using the Smart Alarm, try increasing the timer by 5 seconds next time. By experimenting, you'll find the timing that works best for you.