Combining walking and the wheel, roller skates offer the safest synthesis of mankind’s first inventions after early attempts to make sandals out of fire and flint. Ride on prehistoric breakthroughs with today's Groupon: for $12, you get two admissions, skate rentals, medium drinks, and slices of pizza at Skate World Evansville (up to a $24 value).

Skate World offers a family-friendly venue for active adults and equally restless kids to spend a day swiftly circling a smooth, polished rink. Speedy swivelers can strap on their choice of regular, speed, or inline skates, and take the floor with siblings, friends, or first dates, wondering whether or not to quote Xanadu. Post-skate, tired gliders can rest weary feet and refuel internal engines with a slice of pizza and cold drink from the snack bar. A healthy form of exercise for all ages, roller-skating can help languid loafers get back on their feet and remind them what it feels like to wear shoes again.

Skate World Evansville offers its own deals at certain times of the week that may be better values than this deal; plan ahead to make sure you're redeeming your Groupon at the most opportune time.