Let's make this birthday one to remember.

51 years old (Born on February 18, 1974)

Happy Birthday, Jillian Michaels! May your day be filled with fewer burpees and more cake—just this once. You've inspired millions to sweat, squat, and sprint their way to greatness on "The Biggest Loser," proving that tough love truly works wonders. Your fierce determination and hilarious motivational quotes ("Unless you puke, faint or die—keep going!") have become legendary.

Recently, you've continued empowering people worldwide through your podcasts and fitness apps, reminding us all that strength comes from within (and occasionally from yelling at the TV). Here's wishing you another year of health, happiness—and workouts that don't involve push-ups!