Do you get enough sleep? That's the question Newsround's been putting to more than 1000 kids - and more than half of you said no! Hundreds of kids between the ages of 9 - 11 were asked about their sleeping habits and a lot of them told us their mobiles and TVs were keeping them up at night.

10 year old Lewis says he stays up playing computer games: "I play on my games - it takes me until 10 O Clock to go to sleep. It makes me tired in the morning."



So why is sleep so important? Expert - Paul Gringras - explains : "If you speak to any of the athletes that are going to be in 2012 - they know the importance of a good night's sleep. Your reflexes improve if you've had a really good night sleep, your reaction time to catch a ball - as well as your ability to concentrate and learn and do well in an exam."

The 6th forms Gaïa and Hera worked on this subject.

I'm waiting for their comments