Let's make this birthday one to remember.

40 years old (Born on October 18, 1984)

Happy Birthday, Scott Herman! From flexing your muscles on "The Real World: Brooklyn" back in 2009 to spinning tracks as everyone's favorite DJ-fitness-guru combo—you're proof that reality stars really can lift their careers (and weights) to impressive new heights. Whether coaching folks through workouts or dropping epic beats at packed clubs, you seem capable of making every moment legendary.

Here's hoping this year brings even more awesome sets—both musical and muscular—and fewer awkward dance moves from overly enthusiastic fans trying cardio routines mid-song. Keep inspiring us all while mixing health with hits; you're crushing it!