10 great places to exercise your sense of adventure

— -- Keeping your New Year's fitness resolutions doesn't have to be a long and lonely trip on the treadmill. Men's Health editor in chief David Zinczenko shares his top places to make the world your gym.

Lake TahoeNevada If you find yourself sick of the slopes but still craving some serious cardio, try snowshoeing. A good place to begin would be the miles of groomed trails in the Sierra Nevada near Lake Tahoe, Zinczenko says. "We may not realize it, but our lives have become increasingly noisy between the TVs, computers and politicians. Snowshoeing is the perfect way to plug into the serenity and silence your mind is craving, with the exception of an owl now and then." bluelaketahoe.com

CozumelMexico Jacques Costeau put the Palancar Reef on the map more than 50 years ago when he declared it a scuba hot spot. This island off Mexico is surrounded by coral, which makes it a reef-seeker's refuge. Grab your oxygen tank and swim your way into shape. "If Al Gore's right, the reefs might be in danger, so book now," Zinczenko says. islacozumel.com.mx

Koh TaoThailand It's not called Thai-boxing for nothing. Pack a punch against calories by training with skilled professional fighters on this remote island in Thailand. "If you're not feeling challenged by your current workout, having a guy square off against you intending bodily harm is plenty of motivation," Zinczenko says. Show off your leaner physique and regain your strength by spending your afternoons beachside. tourismthailand.org/attraction/suratthani-84-5415-1.html

Whistler BlackcombBritish Columbia Hit the slopes of our northern neighbor and brace yourself for a workout you're sure to feel après-ski. Consistently ranked one of the top ski destinations in the world, Whistler Blackcomb offers something for everyone — from advanced backcountry skiers to snowplowers in ski school. "The problem with skiing in the USA is that there are so many people," Zinczenko says. "Canada doesn't have nearly the population of skiers, so you don't spend your time waiting in lift lines when you can be on the hill."whistlerblackcomb.com