From Maria Menounos to Chrissy Teigen, see which Hollywood hotties made this year's list
"In the past, I never really thought about my body -- I was burning calories dancing!" the Rock of Ages actress tells Us. "Just in the last year or so, my metabolism slowed, and it's on my brain. If I miss a day working out, I'm like, 'Dang!' But I don't stress about it. I want to enjoy life."