Jason Trawick: Shirtless Transformation

Britney Spears‘ boyfriend, Jason Trawick, has gone through quite the physical transformation in two years!

How did the 39-year-old talent agent from William Morris Endeavor Entertainment get his new physique?

“He eliminated carbs from his diet,” a friend of Jason tells JustJared.com. “He’s been using a workout device that he calls his ‘miracle product.’”

Brit has told Ryan Seacrest, “[Jason and I] love to work out. We do stuff together like that. We take walks.”

Us Weekly reports Jason has lost 50 pounds since dating Britney!