You know your gym? It's pretty big, right? Has everything you need? Well imagine your gym was three times the size, had four times as much equipment to make you sweat, plus racquetball courts, two pools, eight basketball hoops, and locker rooms fit for Carmelo. That pretty much describes the new 24-Hour Fitness in Aurora, a fitness maven's Taj Mahal near the corner of Parker and Arapahoe roads. At 90,000 square feet, it's the largest 24-Hour Fitness in Colorado — and among the biggest in the country. It's busy but never packed, clean but not stuffy, and it's got a juice bar. Go forth and get sweaty.