United Kingdom, May 18 -- Olly Murs has become "so boring" when he's on tour.

The pop star has embraced a health-conscious lifestyle in recent years, and Olly maintains his discipline even when he's on the road.

The singer - who turned 41 on May 14 - told The Sun newspaper's Bizarre column: "I didn't even have a bite of my birthday cake.

"I'm so boring on tour - no desserts or alcohol because it affects the way I perform and train. And I want to deliver the best performances.

"When I first started out I tried to go out in every city, then I realised that just doesn't work."

Olly will be apart from his wife Amelia and Madison, their baby, while he's on tour. But the 'Heart Skips a Beat' hitmaker feels "very lucky" to have such a suppo...