Regular 10pm bedtime linked to lower heart risk
News from the BBC
There appears to be an optimal bedtime - between 10pm and 11pm - linked to better heart health, say researchers who have studied 88,000 volunteers.
The team behind the UK Biobank work believe synchronising sleep to match our internal body clock may explain the association found with a reduced risk of heart attacks and strokes.
The body's natural 24-hour rhythm is important for wellbeing and alertness.
It can also impact things like blood pressure.