Kickstart your workout routine or test your fitness limits with W New York's two day festival. The classes start Friday evening with a grueling one-hour boot camp that the instructors guarantee will burn over 1,000 calories. If you're feeling exhausted after that (and you will), opt for the "Crash With Us" option ($299) which allows you to stay the night at the W Hotel. You might be glad you splurged—On Saturday the burn-so-good feelings continue at 6:30am with an early morning agility run followed by boxing, core exercise and ends with "Inner Rebel Yoga." All this before 12:30!