Hot summer nights have caused nearly 70% of people in Austria to have poor-quality sleep, according to a survey by furniture retailer IKEA, shared on Wednesday.

Men are particularly affected, with 60.1% reporting that high temperatures disrupt their sleep. In addition to heat, women are more likely to be troubled by worries and overthinking (53%), as well as by the snoring of others (36.4%). More than one in five respondents said they generally sleep poorly or very poorly.

“When people subjectively report getting seven hours of sleep a night, this often isn’t their actual sleep time, but rather the time spent in bed – because brief wake-up periods, which everyone experiences during the night, often go unnoticed,” explained sleep researcher Manuel Schabus. Many people wake up briefly as many as 30 times per night, which can reduce actual sleep by 20 to 40 minutes.

“Our studies generally show that people are only sleeping about 6.5 hours per night – and in my view, the data indicates that the majority of Austrian society is experiencing mild sleep deprivation,” Schabus said.

While more than half of those surveyed said they find it easy to fall asleep, nearly a third (27%) find it difficult. Respondents reported sleeping particularly well when on holiday (35%), after a hard day at work (34.7%), or after physical exercise (31.4%). Some 29.2% of men said they sleep very well after intimacy with their partner, compared with 16.8% of women.

The most common negative factors affecting sleep, according to the survey, include excessively high temperatures (56.7%), which are becoming more frequent due to climate change, as well as overthinking and worrying (47.6%) and noise (31.7%). Additionally, household duties and family responsibilities negatively impact the sleep quality of 56.4% of women and 40.7% of men.

Aside from sleep, the most popular activities in the bedroom are intimacy (54.7%), reading (45.4%), using smartphones (43.6%), watching television (36.4%), and listening to music (27.8%). More than 12% also admitted to occasionally eating in the bedroom. Only 10.4% of respondents said they use their bed exclusively for sleeping.

Around 80% reported sleeping with the window open either year-round or at least during the warmer months, while two-thirds change their bed linen at least every two weeks.