Evening Screen Content and Sleep Architecture in Older Adults: Crossover RCT

Participants watch a curated selection of soothing documentaries narrated by Sir David Attenborough for 30-60 minutes each evening during one hour before bedtime.

Participants engage with the interactive word-based game Ruzzle for 30-60 minutes each evening during one hour before bedtime, designed to provide mental stimulation.

Participants read a non-fiction book of their choice for the same duration, avoiding all digital screens during one hour before bedtime before bedtime.