Is Sleeping Too Hot Unhealthy?
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Is sleeping too hot unhealthy? The answer is yes! Sleep should be refreshing and restorative. Yet many people wake up clammy at night under a duvet that's too thick – with all the consequences that entails. Because did you know that sleeping too hot isn't just uncomfortable, but can actually be truly unhealthy? As part of our collaboration with hygiene expert Rob Geus, known for his sharp nose for cleanliness, we explain why it's better to snuggle up cool and fresh.
“Did you know you lose between 200 and 500 millilitres of sweat per night in bed? That's 1 to 2 glasses of fluid! And part of that ends up in your duvet. Lovely!” - Rob Geus

Why is sleeping too hot unhealthy?
If your body can't get rid of heat during sleep, your entire recovery process is disrupted. You sleep less deeply, sweat more, and produce less melatonin. And you notice it the next day: tired, irritable, and simply not at your best. Excessive sweating also creates a sultry bed climate. Ideal for the growth of bacteria and dust mites – two things Rob Geus would rather not see in the bedroom. It's alarming how many people spend years lying under an unwashed duvet full of sweat, dust and skin oils – a hygienic no-go.
Is sleeping too hot unhealthy: the consequences at a glance
To clarify why sleeping too hot is unhealthy, we've listed the possible consequences for you:
- Disrupted sleep quality: harder to fall asleep, less deep sleep.
- Excessive sweating: restless nights, risk of dehydration.
- Increased heart rate: your body stays active, less relaxation.
- Disrupted day-night rhythm: poorer recovery due to a disturbed body clock.
- Poor hygiene: heat and moisture are a breeding ground for dust mites and bacteria.
A duvet that promotes your health
Fortunately, there are duvets that look out for your health and your hygiene. Such as the breathable, washable 2-in-1 duvets from Zelesta . These duvets are designed to counteract night sweats. The smart structure quickly wicks away heat and moisture – keeping you cool while you sleep, even on warm nights. And the biggest benefit? You put the entire duvet in the washing machine, so you always freshen up your whole bed instead of just the duvet cover. That way, your bed stays clean, fresh and free of invisible grime!
Ensure a fresh night's sleep
As you've read, sleeping too hot really is unhealthy, not just uncomfortable. Ensure a pleasant sleep climate with a breathable, lightweight duvet from Zelesta, such as the special summer duvets, and be assured of a fresh and healthy night's sleep.