This is really important. Understanding your player's chronotype is fundsmental if you are supporting the performance of footballers (or any athlete) but we really really don't. ps, also do you know if they sleep on their front, back and/or side? Also important
Tess Daly over on Insta telling people to mouth tape. She knows her stuff when it comes to @bbcstrictly but whoever is advising her on her sleep is selling her some snake oil. I'll say it again, unless you've consulted with an clinician, don't tape your mouth, it's dangerous