Alan Davies

He'd nap holding steel balls over a metal plate so the crash would wake him up the second he drifted off, just to steal ideas from his dreams without wasting time.

Einstein, on the other hand, reportedly slept 10 hours a night and took naps.

maybe dreaming up relativity while snoring his head off.

So you can fight sleep with metal balls, not recommended to try at home, or embrace it like a genius physicist.

But either way, the lights do have to go out.

Sleep tight.

A huge thank you to my guests, Professor Dirk-Jan Dijk and Dr Sophie Bostock.

Next time on Life Without, I'm overruling the dials and locking the world into a permanent summertime.

Join me next time for a Life Without Standard Time.

Life Without Sleep was produced by Ria Moussa with support from Michelle Martin.

Rubina Pabani is the executive producer, Emily Jarvis is production manager and sound designer mix is by Nick Hanley and Tom Butler.

The commissioning editor for Radio 4 is Rhian Roberts.

This is an ITN production for BBC Radio 4.

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NASA's first space shuttle, Columbia, was a marvel.

On her final flight in 2003, experiments ran smoothly and data poured in as she calmly circled Earth.

Then, upon re-entry, Columbia shattered, claiming the lives of all seven astronauts.

A villain of the piece was bad writing.

Minutes after liftoff, debris was seen near one of the wings.

Engineers flagged it.