Peter Andre works out naked.

Peter Andre

Peter Andre

The 44-year-old singer - who caused a frenzy earlier this month after he posted a bare-chested snap of himself on Instagram - said that although he typically trains wearing traditional gym gear, he occasionally works out while completely naked.

He shared: "I posted what some took to be a naked pic from the gym. I do wear clothes in the gym, I promise! Well, maybe not always."

The father-of-four - who was once known for his chiselled physique - also opened up on his grooming habits.

He told new! magazine: "I agree with grooming yourself to a point but, how do I put this ... Rather than go the whole hog down under, just look after yourself. You know, like what you do to your hedges in the garden."

Meanwhile, Peter recently admitted he is struggling with a lack of sleep due to his baby son.

The 'Mysterious Girl' hitmaker said the nocturnal disruption his baby son Theodore is causing to their household has come as a shock to the system, especially because his and wife Emily MacDonagh's three-year-old daughter Amelia was always such a good sleeper.

Speaking earlier this month, Peter - who also has kids Junior, 11, and Princess, nine, with ex-wife Katie Price - said: "Little Theo has had me up early every morning.

"I know he's only 10 weeks old and a lot of people will probably say it's not unusual, but because Mills was sleeping through the night from six weeks I'm finding it particularly hard.

"As Emily is still breast feeding, I can't take over during the night so we do a deal where she goes to bed at 9pm and I have him until midnight, and then at midnight she'll do a feed.

"Then I'll try and sleep between 12 and 6am and take him from 6am or whenever so Ems can catch up on her sleep. It's a bit mad at the moment but it's all done with love."