1. This article suggests water before bed improves sleep – how does this work?

Drinking water before bedtime enables sweating that cools the body. As you sleep, the water helps achieve the required core body temperature that initiates sleepiness. It also prevents indigestion and relieves pain, giving a cool and uninterrupted night. People with a flu or cold can drink hot water before sleeping to relieve the symptoms, thus acquiring calmness for sleep.

2. Other advice tends to suggest that water can improve alertness and wakefulness – how does this work?

 A well hydrated body functions more productively, resulting in a high energy boost that keeps you alert. Also, getting up from your desk to fetch water helps exercise your body and keeps you awake. This prevents unnecessary nap at your working station, making you more functional and focused.

3. Is water better for wakefulness, sleepiness, or both? How/why?

Drinking water keeps your wakefulness more than sleepiness. Moving from your seat to the water point at intervals to hydrate makes youalert and focused. Hydration also facilitates proper body functioning with heightened energy, thus increasing wakefulness. Dehydration makes you dull and fatigued.

Ieva Kubiliute

Ieva Kubiliute is a psychologist and a sex and relationships advisor and a freelance writer. She's also a consultant to several health and wellness brands. While Ieva specialises in covering wellness topics ranging from fitness and nutrition, to mental wellbeing, sex and relationships and health conditions, she has written across a diverse range of lifestyle topics, including beauty and travel. Career highlights so far include: luxury spa-hopping in Spain and joining an £18k-a-year London gym. Someone’s got to do it! When she’s not typing away at her desk—or interviewing experts and case studies, Ieva winds down with yoga, a good movie and great skincare (affordable of course, there’s little she doesn’t know about budget beauty). Things that bring her endless joy: digital detoxes, oat milk lattes and long country walks (and sometimes jogs).

Latest from Ask the Expert