I can't even stay awake one hour... during dutch class -_-"

Shazz, Rotterdam, Netherlands

What stupid things people will do just to gain some sort of recognition. Are we impressed with this sort of achievement? Definitely not!! Try something else, like see how many orphans you can feed, or how many wildlife you can save. Our planet is in dire striaight and it is a shame that people with so much passion is passionate for all the wrong things. Imagine if all these wackos put in their effort in making this world a better place to live? Humans have a lot to learn from animals. What have your 3 children learn from you from your marathon? Nothing I bet!!

Mia, Brisbane, Australia

If he had applied to Guinness they would have told him they wouldn't entertain that type of record....

Hicksy, Perth, West Australia

Was the tea not a stimulant (caffeine)? Or was it an herbal/decaf variety? I would think if he had been drinking distilled water that would have made a difference.

Constance, Sauratown, NC, USA

I agree with John in Leicester, sleep is for the weak(especially during exam time).

I wonder how long Mr Izard slept after his marathon? The longest I have stayed up is for 42 hours, and needed to sleep 17 hours then 12 hours the next night to catch up.

CM, Nottingham,

How can one go about trying to set a world record without researching what the world record is? That is almost as stupid as staying awake for all those hours.

LisaJo, Las Vegas, NV, USA

No stimulants..? So what's the caffine in tea then?

If he was trying to prove that the brain doesn't become less effective when tired, he's obviously failed as his slowed speech indicates that it clearly does.

Alex Heylin, London, UK

Izard excellent theory! it really made me laugh...!

Aamna, Crawley, England,

Just don't try this, it doesn't prove anything, to be alive you need to sleep. Why try do without? You can't possible gain any credit for doing something self harming

robert, London, UK

How did he know which side of his brain he was using.
Also this is a very interesting case however more proof of how is brain continued to work at the same level is imperative to psychologists, does anyone know if there is anymore detail?
If he was slower in interviews this does show that sleep affects the brain.
Also how did he train his brain to be more efficient, would love to know all the answers as am studying psychology and find sleep deprivation to be very interesting

Vikki, Surrey,

Nick, you are missing the point completely.

a) Do you not find it impressive that he was able to stay away without the use of any stimulants?

b) The experiment wasn't to impress or to break a record, it was to see how the mind alone could be reprogrammed to stay awake for so long.

jellyellie, Surrey, UK

It might be unethical....but I am curious....how heavy was the heaviest cat?

Gareth, Falmouth, Cornwall

Zzzzzzzzzzzzzzzzzzz

Zooblok the Flatulent, 34 The Pyramids Cydonia, Mars

This article made me sleepy

Rudiger, Penzance, UK

I could stay awake for 20 days with the use of methamphetamines. I dont really find this feat very hard at all.. Yes i know he didnt use stimulants as far as i could tell. But none the less. A very achievable feat with stimulants.. I am not impressed

Nick, Tucson , Arizona

sleepness is weakness

john, leicester, uk

Thanks...I knew there was a reason I like to sleep so much. It's good for me!

Tim , Manchester,

How long did Izard need to stay awake to come up with such an interesting (and nonsensical) theory??

James, Oxford, UK

Sleep is not behavior.
Sleep is not something your brain needs.
Sleep is the default metabolic condition of every cell in your body, also known as anabolism.
Waking up is merely a temporary phase of metabolism, a destructive one, also known as catabolism, which only serves two critical purposes 1) to locate and ingest food, then expell non-digestible food-waste and 2) to procreate. Waking up is not good for anything else that is critical to a cell's survival and success.
Returning to sleep, the productive metabolic state, allows the cell to regenerate itself, protect itself and grow, processes which are all interrupted by catabolism - waking up, moving around, eating, procreating, etc..

Izard, Honolulu, Hawaii

He really shouldn't lose sleep over his failed record attempt. Most people find the whole thing a bit of a yawn any way !

Wing , Poole, UK

Rest and be thankful, Tony.

Swilly Tisher, Loch Maree, Scotland

Thank God its over so now we can all get some sleep.

Don, Sydney, Australia