Centuries ago, man planned his weekends around getting indoors, where he could jam on skin drums and relax with Cro-Magnon friends without worrying about volcanoes or getting sideswiped by a drunken pterodactyl. Now that the indoors have lost their charm, get outside with today's Groupon to Peak Adventures. For $25, you get your pick from one of three guided outdoorsing trips: a day hike, a basic mountain bike trip, or a basic rock-climbing outing. Peak Adventures provides transportation to and from the adventurous locale, and all the necessary equipment is also provided, with the exception of a bike for the mountain-biking excursion; if you don't have one yourself, bike rental is available at an additional cost.

Day hikes can cover a variety of locales around the Sierras, including Woods Lake and Grouse Ridge. The basic mountain bike trip can be tailored to both those newly liberated from training wheels and experienced shredders. Those with tenacity to spare (kept in extra jars) might consider joining the Cult of Rock Octopus with the basic rock-climbing course, where they'll find a fittingly challenging introduction to entry-level techniques, knot tying, and belaying (intermediate climbers will have plenty of time to play and build upon their pre-existing skills). Check Peak Adventures' calendar to reserve the next time that works for you, and the friendly adventure specialists will add more excursion dates to accommodate a high volume of Groupon customers.

Thanks to their combination of experience and enthusiasm, Peak's pine-scented professional go-outsiders make even the most neophyte hiker or biker feel at home in the woods, tapping into novices’ nascent abilities for rock climbing and goat whispering. With each trip capped at 10 like-minded folks, you'll find just the right balance between a social event and a wild escape, not to mention the fact that you'll finally have the chance to explore your own larger, metonymical backyard by diving into a better, structured way to leave your small, literal backyard.

Participants must be at least 16 years old or accompanied by an adult if younger.