Enough Sleep?

The Torygraph had an amusing piece on teenagers:

"Research published in the journal Pediatrics has shown that adolescents often fail to get enough sleep because despite still needing up to 10 hours a night, puberty affects their body's production of sleep-inducing melatonin, making going to sleep early more difficult. Those who slept the least and had to get up the earliest had the lowest cognitive performance and worst moods."

Now we know, that might explain many blog entries or does it?