Sleeping less than 6 hours cuts cognitive benefits of exercise: Lancet study

New Delhi: Sleeping for less than six hours daily may cut down the protective effect of regular physical activity against cognitive decline, according to a study published in The Lancet Healthy Longevity journal.

Researchers from University College London (UCL) in the UK



looked at cognitive function over 10 years in 8,958 people aged 50 and over in England.

They analysed how different combinations of sleep and physical activity habits might affect people's cognitive function over time.