Comment GEOCACHING (Score 1) 1806
Do something outdoorsy that you've never done before. Hell, do them all: Rock climbing, kayaking, surfing, backpacking, skiing.
I'll toss out an idea that I latched onto a couple of years ago: Geocaching (www.geocaching.com) Combines a variety of level of physical activity, gets you outside into the big blue room, lets you play with a really cool piece of technology AND is a 'competitive' game, especially if you have friends/co-workers into things as well. (As much as a Geocacher says it's 'not about the numbers', it certainly can be!
And if you DO get addicted and happen to live in an area where Old Man Winter arrives far too early for your liking, you'll start to think about trying snow shoeing and cross country skiing just so you can keep going.
Give it a shot - it's a great way to get outside and see some REALLY cool spots that you'd never were there. And they're probably in your backyard!