We know that Australians aren't getting enough good quality sleep, but new research has revealed when Aussies get to bed and wake up is also a problem.
Nearly a third of people's regular sleep patterns are believed to be out of sync with their natural body clocks, a condition called "social jet lag".
Pressures such as work, school or daily routines can cause this misalignment.
Doctor Amy Reynolds is a lecturer in psychology and public health at C-Q University Australia, and a co-author on a study of the condition published in the international journal "Sleep Medicine".
She says a weekend sleep-in isn't a solution.
Of the 837 people surveyed, not including night workers, evening or rotating shift workers, for 31 per cent the length of time they sleep is more than an hour out of sync with their body clock on weekends compared with work nights.
The results are similar to those of a large-scale Dutch study, with full-time workers bearing the brunt.
One of the biggest culprits is technology.
Socially jet lagged people are more likely to go to bed late, wake up tired, be late for work and go to work when sick.
It's a problem that Professor Eastwood says is having a massive effect on society - so much so that even federal parliamentarians are taking notice.
But some people believe the root causes lie deep.
This woman says people are taught to prioritise work above everything else - even your own health.
