It’s official – you really CAN get out of bed on the wrong side, a survey has found.

Those who get out of the right side of the bed are more likely to wake up feeling tired and grumpy than those who get out of bed on the left.

People who get out of bed to the right take longer to shift their bad mood and are more likely to see their work affected by their tiredness.

The survey of 2,000 adults also found nine in ten wake up still feeling tired three mornings a week, with the average adult saying it’s almost 10am before they start to feel properly awake.

Having a bad night’s sleep is the most common cause of morning grumpiness followed by stress, waking up earlier than you need to and wet or cold weather.

A spokesman for iron supplement Spatone, which commissioned the research, said: “When you are obviously tired and grumpy, one of the first things people will ask you is whether you got out of bed on the wrong side.

“And while we would usually just laugh back, it seems it really can be the case, with the right-hand side the worst to get out of if you want to feel happy and ready for the day ahead

 “There is nothing more frustrating than waking up in the morning still feeling tired and this can go on to have a real effect on your mood for the first few hours and even the rest of the day.”

The study shows fifty-seven per cent of people believe it is possible to get out of bed on the wrong side, with almost one in ten even trying a different side to see if it makes a difference to their mood.

And while left-hand bed leavers say their mood starts to lift at 9.07am, for those who get out on the right, its 9.22am before they start to feel happier.

Those who get out on the right also take longer to feel awake and ready to go in the mornings, saying it’s 9.32am before they feel properly awake.

But people who get out of bed on the left feel their tiredness lift by 9.26am.

Those who get out of bed on the right are more likely to wake up feeling tired and grumpy, with 77 per cent saying this is the case for them compared to 75 per cent of those who jump out of bed on the left.

It also emerged that people who get out of bed on the right are most likely to have their boss or work colleagues comment on their tired or grumpy state, with 25 per cent saying this has happened to them, compared to just 19 per cent of those who wake up on the left.

Researchers also found that three quarters of Brits admit they wake up in a bad mood on an average of two mornings a week.

And more than half (56%) admit they aren’t a morning person, with seven in ten admitting their morning mood has led to an argument with someone.

More than three quarters even said their work is affected if they wake up feeling tired and grumpy, while almost one in ten admit to taking their frustrations out on their work colleagues or those around them.

Top ten reasons for feeling tired and grumpy in the morning: 

1.Having a bad night’s sleep

2.Stress

3.Waking up earlier than you needed to

4.Wet or cold weather

5.Waking up still tired

6.Not wanting to go to work

7.Knowing you have a busy or difficult day ahead

8.Waking up thinking it’s Friday and realise it’s not

9.Sleeping through your alarm/your alarm not going off

10. A bad journey to work