For a real challenge, register for the Wings for Life World Run and see how far you can run before the "Catcher Car" -- released 30 minutes after the start of every race location -- relieves your legs of their push-the-pace duties.
Cancel your upcoming yoga retreat and go on a fitness getaway instead
With local meditation and mindfulness studios more abundant than ever, you don't need to travel across the country, or even the world, to clear your mind and reset. So cancel that "life-changing" trip to Bali and opt for a full roster of active adventures at a fitness retreat.
Organizations like Ketanga Fitness, Travel with Lipstick, and Mile High Wings promise adventures to exotic destinations (think Costa Rica, Tulum, and more) that combine fitness and fun as you experience a new location. Not only will you get the chance to travel with like-minded people, you'll also have the chance to reinvigorate your fitness regimen and return without those extra 3lbs that usually sneak their way into your carry-on bag.
Ditch your focused workouts for a hybrid model
Your standard spin, yoga, and strength-training classes may feel safe, but if you want some real variety, try a hybrid workout that mixes up workout formats in a single class.