Modern screens can cause
sleep disruption if used late.
Weekends may top up?
Research suggests that sleep duration is important for health, making maintaining decent sleeping patterns important for a healthy lifestyle. Chinoy et al (2018) have found evidence that the use of electronic tablet devices with light-emitting screens close to bedtime can result in later bedtimes and disrupted circadian rhythms and result in lower alertness in the morning.
Many of us like a lie in at the weekend, as if we are making up for the week gone by. Research by Åkerstedt et al (2018) studying over 40,000 subjects across 13 years suggests that longer weekend sleep may indeed compensate for shorter weekday sleep.
Original research:
Chinoy et al (2018): https://physoc.onlinelibrary.wiley.com/doi/10.14814/phy2.13692
Åkerstedt et al (2018): https://doi.org/10.1111/jsr.12712