Liisa Kuula

Psychology, PhD, University of Helsinki

Liisa Kuula has extensive experience in sleep research as well as in innovations relating to sleep measurements using multiple techniques (actigraphy, thermologgers, EEG, self-reports). Her background is in cognitive science and she is experienced in evaluating psychological factors relating to behavior change, motivation, errors, and biases, as well as the health impacts of poor sleep.

Lessons by Liisa Kuula


Alcohol – Myths and Facts

One of the most common sleep myths is the effects of alcohol and its relaxing qualities. The...


How to Improve Your Sleep Quality?

Getting enough sleep does not guarantee that the sleep you get is refreshing. Besides quantity,...


Sleep Hygiene

Do you often feel that you could have had better rest? Do you roll in bed restlessly until the...


Addicted to Caffeine?

Caffeine is the most commonly used and the least regulated psychoactive stimulant. By affecting...


Earlier Sleep–Wake Cycle

If you wake up too early in the morning, the reason behind is not always in bad sleeping habits,...


Mind Control

A stressful point in your life, thoughts running through your head, anxiety? Those are very...


Tips for Better Sleep Hygiene

Good sleep hygiene is a set of habits and routines that make falling asleep faster and sleep more...


Sleep Pressure

The inner clock is not the only mechanism regulating your sleep-wake rhythm. Your level of...


What Can Heart Rate Tell About Your Sleep

Night-time heart rate is a widely used metric in sleep tracking, and many trackers report your...


Sleep Trackers Pt. 1: What You Should Know About Sleep Data and Sleep Tracking

Using a wearable device is by far the most popular way to track your sleep at home. Practically...


Pre-sleep Routines

In addition to a consistent sleep-wake schedule, other routines can also be useful in mastering...


Welcome to Nyxo Sleep Coaching!

Hello! And great to have you taking part in Nyxo Sleep Coaching. The goal for the next few weeks...