Nicole Scherzinger is the proud owner of arguably one of the best bodies in all of showbusiness, so it may shock people to realize that she even finds it hard to keep to a fitness routine, especially as she is becoming older.

Nicole Sherzinger
Scherzinger is finding it harder to maintain a strict fitness routine as she gets older

What makes her toned physique even more impressive is that the Pussy Cat Doll is currently performing six times a week as Grizabella in a revival of ‘Cats’ in London, but when talking with the new issue of Cosmopolitan Body, she credits taking care of her body as the reason behind maintaining such a hectic schedule.

“[Exercise] changes everything about how I approach my day and helps me go about life with confidence—that's the main reason I do it. It gives me clarity and makes me feel stronger,” she told the mag. "It's not so much for the physical and vanity side of it. I do it more for the emotional and mental strength it gives me."

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It is no surprise that living a healthy lifestyle is very important to Scherzinger, and she revealed to the magazine why. "Healthy for me means a healthy mind, that everything else becomes aligned—the mental, physical, spiritual…everything. Being happy means having balance, being creative and finding peace,” she said.

However, the brunette beauty did admit being in her mid-30’s limits the intensity of her workouts, which leads her to become less strict.

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"I'm like any woman, my weight fluctuates up and down. I have good days and bad days," she confessed. "For many years I worked out every single day, but now I'm in my thirties [and] it's like pulling teeth. I gotta make myself workout—you need to find that balance."