Justin is nervous and prone to perspiration

Justin Bieber‘s dad has revealed that his 18-year-old son has inherited one particular physical characteristic.

Both Justin and former mixed martial arts fighter Jeremy Bieber have a little problem with perspiration.

‘My hands sweat a lot, so do his. And his feet,’ says Jeremy, 37.

‘No, they don’t smell.’

Jeremy also lets slip that Justin can get rather anxious.

He admits that the singer can be a bit of a scaredy-cat at night time.

‘He was afraid of the dark for most of his life,’ Jeremy tells The Sunday Times Magazine.

‘Sometimes he still sleeps with the light on.’

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Anna Duff