How sharks sleep has been a mystery. Some species of shark need to swim continuously to push water over their gills and breathe. New research is shedding light on how sharks sleep.
The thoughts are often distressing and punitive. Strikingly, these concerns vaporise in the daylight, proving that the 3am thinking was completely irrational and unproductive. But why?
Sleeping on the job?
Maciej Olszewski/Shutterstock
To boost your immune defenses against corona and other viruses, one of the most effective things you can do is maintain your natural circadian rhythms. Here’s how to do that.
Julie Green, Murdoch Children's Research Institute and Jon Quach, The University of Melbourne
Daylight saving time starts this weekend, and it can often be the beginning of new dramas getting kids to bed. Here’s how to make the transition a little smoother.
Breast milk contains ingredients in concentrations that change over the course of the day. Researchers think milk is chrononutrition, carrying molecular messages to help set a baby’s internal clock.
Sikhumbuzo Notshe of the Stormers (L) is tackled by Waisake Naholo of the Highlanders (R) during a Super Rugby match between New Zealand’s Highlanders and South Africa’s Stormers.
EPA-EFE/NIC BOTHMA
You are tired. Would nine more minutes really hurt? Is hitting the snooze button a good idea? Should you just get out of bed? Or is snoozing a sign of a more serious medical issue?
Can’t sleep: these cloned macaque monkeys are missing a gene involved in regulating the sleep/wake cycle.
Chinese Academy of Sciences via AAP
Researchers in China have produce a world first: gene edited, cloned macaque monkeys. They say such animals will be vital for research on human health – but ethical concerns remain.
Our study found that the performance of “night owls” and “morning larks” varied considerably on both cognitive and physical tasks.
file404/ Shutterstock
Everybody has a personal internal clock in their brain that dictates when we feel like eating, waking and sleeping. But what happens when our life doesn’t match our body clock? And how do we read it?
You’ve heard the adage, you are what you eat. But a new study suggests that you are ‘when’ you eat may be more accurate. Restricting eating times can keep chronic diseases at bay and ward off obesity.
Yanyan Yang, University of North Carolina at Chapel Hill and Aziz Sancar, University of North Carolina at Chapel Hill
Circadian clocks regulate the timing of hundreds of processes in the cell, suggesting that matching medications with your biological clock could improve the outcome
Children need different amounts of sleep but should aim to wake feeling rested, without an alarm.
Juninatt/shutterstock
The shift from daylight saving time will leave kids’ body clocks an hour “out of sync”, in a similar way to jet lag. Here are some evidence-based strategies to deal with this.
Professor of Regulatory Biology at the Salk Institute for Biological Studies, Adjunct Professor of Cell and Developmental Biology at UCSD, University of California, San Diego