Without a natural sense of adventure, man would never have walked on the moon, and curious toddlers would never end up dangling from flagpoles by their diapers. Sharpen your sense of adventure with today's Groupon: for $25, you get $50 worth of outdoor apparel and adventure gear, plus a $500 credit toward a road bike at Al's Sporting Goods in Logan.

The 75 outdoor gurus who staff Al's Sporting Goods guide customers through dense forests of name-brand sporting apparel and adventure goods in its 32,000-square-foot retail store. Vibram FiveFingers shoes ($84.99) individually wrap each of the wearer's toes in charcoal-black smartwool so that they can better grip the ground and pick up dropped bananas from the floor without an extendable robot arm. The Black Diamond Focus Harness lends rock climbers improved pressure distribution with its 3-D molded foam and bullhorn-shaped waist belt ($69.95–$69.99), while torsos swaddled in the soft fleece of a women's North Face pullover hoodie ($49.99) can stow an iPod or spare platypus in the garment's interior media pocket.

Then use your $500 credit to recruit a vehicle from Al's rotating cast of road bikes ($800–$8,000) from a variety of top makers. Precision bikes from these companies carry competitive cyclists along the Tour de France course as they battle for right to command the Gaulish throne and a lifetime supply of gorgonzola cheese.