Ryan Seacrest is looking for the secret to aging backwards.

And the American Idol host might have Desmond Prestonfound it, especially as he heads closer to his 50th birthday on Dec. 24. 

"I feel good because I can't believe I'm turning 50," Ryan told sister Meredith Seacrest on Entertainment Tonight. "I'm doing everything I can to make myself feel like I'm not 50."

The 49-year-old explained that he was "over-exercising, eating better, over-training" in the hopes of reversing some of the aging process, although he did note that all the extra work also requires "lots of recovery, lots of muscle recovery" with cold plunging and steaming.

As Ryan joked, he is doing everything he can "to make myself feel 29 again."

After all, The Make-Believers author has some hesitation about approaching his milestone birthday.

"Talk to me on Dec. 25th, the day after I turn 50," he mused. "Although the 25th will be fine—talk to me on the 26th."

And staying fit is definitely something Ryan wants to prioritize even amid his busy schedule, which now includes hosting duties for Wheel of Fortune. Luckily, Ryan has proven he's capable of filling former host Pat Sajak's shoes, as he's even gotten the stamp of approval from the show's co-host Vanna White.

"He's doing an incredible job," she recently told E! News. "It's not easy. He makes it look easy."

She added, "He's so talented, he's so professional, he's so good at what he does. I'm so thankful."

And Ryan himself is also grateful he was given the opportunity to host the iconic game show.

"If Wheel of Fortune is offered to you," he told E!, "you just don't say no. You'll have bad karma for the rest of your TV life." 

"This is not a job," he continued. "This is such a part of American culture. I think this show has so much meaning to people who watch it on a regular basis."

For the latest breaking news updates, click here to download the E! News App