Benedict wore himself out with his endless energy

Benedict Cumberbatch didn’t make life easy for his parents when he was growing up.

The Sherlock star, whose mum and dad – Wanda Ventham and Timothy Carlton – are both well-known actors, says his endless energy made him difficult to deal with.

‘I was a pain in the arse,’ says Benedict, 36.

‘Show-off. Not malevolent – just disruptive. They tried to see if I could put all my energy to good, rather than just disrupting yet another lesson doing a silly voice.’

Benedict’s mum says her son became ‘skeletal’ as he used his energy up so fast and the actor admits that he rarely slowed down.

‘I had a very fast metabolism,’ he tells The Times Magazine.

‘They worried that I had a thyroid problem. I would arrive on the school steps drenched in sweat, because I would run there.

‘I never stopped.’

SEE PICTURES Benedict Cumberbatch‘s life in photos

SEE PICTURES Benedict Cumberbatch shows off his sexy beach body

SEE PICTURES Sexy Benedict Cumberbatch makes catwalk debut at London

Anna Francis