Power Nap Timer

A short nap at the right time can give you an energising afternoon boost. It's not called a power-nap for nothing!

Most people nap for too long. They fall into deep sleep, their alarm goes off in the middle of it, and they wake up feeling worse than before. This is called sleep inertia, and it can last up to 30 minutes. Not ideal if you were napping to be sharp for a 2pm meeting.

The 20-minute nap is the most studied and most consistently effective. It is short enough that you stay in the lighter stages of sleep, long enough that your brain gets meaningful restoration. Mood, alertness, reaction time, and even creativity all improve from a well-timed 20 minutes.

If you have more time, the 90-minute nap is the next best option. You complete an entire cycle, which means your body cycles through to the end naturally and you rise at a point that feels right. The 60-minute nap is the trickiest because it often lands you inside a period of deep sleep right as the alarm fires.

What happens in 20 minutes

Within the first five minutes or so you transition from wakefulness into stage 1 sleep: your breathing slows, your muscles relax, and your mind begins to wander. By around ten minutes you are in stage 2, where sleep spindles fire in the brain and short-term memories get shuffled into storage. This is where the real restoration happens.

At 20 minutes your alarm fires. You are still close to the surface. The transition back is gentle. You open your eyes, you stretch, and within a minute or two you feel the benefit: sharper, calmer, and ready for the afternoon.

Go beyond 30 minutes and you risk tipping into slow-wave deep sleep. Waking from there is harder, and the grogginess can last the better part of an hour. The timer is not there to cut you short. It is there to keep the promise of a good afternoon.

The best time of day to nap

Between 1pm and 3pm is your natural dip. Your core body temperature drops slightly after lunch, your alertness dips with it, and a nap at this point works with your biology rather than against it. Napping after 4pm risks interfering with your night sleep, especially if you tend to lie awake.

Even a short nap at the right time can lift your afternoon in a way that a third coffee simply cannot. Let yourself rest.

Drink a cup of tea or coffee just before you start the timer. Caffeine takes around 20 minutes to be absorbed and you will wake up at the moment it kicks in, which gives you a natural energy lift on top of the restorative effect of the nap itself. This is called a coffee nap, and the combination will give you a energetic second wind through the afternoon.