The CrossFit craze doesn’t seem like it’s going to die down anytime soon. In fact, according to a recent Fitbie article, this year’s CrossFit Games sold out within days of tickets going on sale. In 2011, spectators didn’t even fill up half of the 12,000-seat venue. So why has the strength and conditioning program—which mixes sprinting, jumping rope, and other forms of high-intensity cardio with functional exercises performed with all sorts of equipment, including barbells, dumbbells, pull-up bars, kettlebells, medicine balls, and more—earned so many devout followers? According to CrossFit Games athlete Cheryl Brost, a 41-year-old mother of two, it’s because it works. And not just for the uber athlete, but for people of all shapes, sizes, ages, and fitness levels. “I’ve seen kids as young as 3 in the gym, all the way to people in their 80s going through the workouts,” says Brost, who placed 15th world-wide in this year's games. “The way they’ve set CrossFit up in terms of functional movement, really anyone can do it.” Another bonus: The workouts of the day (referred to as WODs) are usually no more than 20 minutes, making them a great time-saver. Still too intimidated? Read on for Brost’s 8 top reasons boomers should give CrossFit a try. Read how to approach CrossFit here: BOOM!