The folks behind Snap Fitness understand that exercise can be tough to cram into schedules, especially when they're packed with work and family obligations. That's why they keep their doors open 24 hours, accommodating everyone from early risers hoping to jumpstart their day to 2 a.m. joggers paying penance for that three-course midnight snack. The clean, no-frills space brims with the latest industry gear, including cardio equipment, strength-training machines, and free weights, as well as private showers and tanning booths. Personal trainers also stand ready to help clients in need of more outward motivation to meet their fitness goals.