https://pubmed.ncbi.nlm.nih.gov/26452168/ https://pubmed.ncbi.nlm.nih.gov/26452168/ > “Objectively measured sleep quality and the perceived freshness of bedroo

https://pubmed.ncbi.nlm.nih.gov/26452168/ https://pubmed.ncbi.nlm.nih.gov/26452168/ > “Objectively measured sleep quality and the perceived freshness of bedroom air improved significantly when the CO2 level was [below 900ppm], as did next-day reported sleepiness and ability to concentrate and the subjects' performance of a test of logical thinking.“ 1600ppm is definitely impacting your cognitive abilities and it's something you need to fix ASAP.