Extreme Vacations: five ways to get out of your comfort zone this winter

Extreme Vacations: five ways to get out of your comfort zone this winter

Extreme Vacations: five ways to get out of your comfort zone this winter The Waitomo caves on New Zealand’s North Island (Image: courtesy Legendary Black Water Rafting)
 

Lying on a beach is so 2013. The best way to truly escape the daily grind is to get outside your comfort zone. For thrill-chasers looking to seriously maximize their vacation days, we’ve rounded up five heart-pounding, adrenalin-pumping (or simply eye-opening) adventures.