Let's make this birthday one to remember.

53 years old (Born on March 22, 1972)

Happy Birthday, Houston Alexander! You're the only guy who can knock out opponents faster than most people blow out birthday candles. Ever since turning pro in 2001 and storming into UFC's octagon back in 2007, you've been delivering punches harder than grandma’s fruitcake.

From your unforgettable knockout debut against Keith Jardine to electrifying crowds with relentless energy, you’ve proven age is just a number—though we suspect yours might be measured by how many fighters you've sent sprawling onto the canvas. Keep defying gravity (and birthdays), champ; here's hoping this year brings more victories—and fewer bruises—to celebrate!