Research shows – even that not commissioned by publicists for homeware companies – that clean bedding improves your sleep. A 2012 study by the US National Sleep Foundation found that

Kinda funny when the National Sleep Foundation is also industry funded, just not by homeware companies.

That said, anecdotally I agree that I sleep better on fresh sheets.

Absolutely! I feel like washing my sheets weekly is about taking care of me and I think I sleep better too.