Rising Prevalence of Obstructive Sleep Apnoea During Nighttime Heatwaves Across Europe https://pubmed.ncbi.nlm.nih.gov/41151987/ Warm nights not only make it harder to fall asleep, they can also exacerbate breathing pauses during sleep https://www.t-online.de/gesundheit/aktuelles/id_101007238/schlafapnoe-gefaehrliche-schlafstoerung-nimmt-zunehmen.html