Kids burn off energy by running around and climbing, unlike adults, who can only expend it by yelling at traffic. Let kids unleash energy the natural way with today's Groupon: for $40, you get 10 open-jump visits at Bounces R Us in Round Lake Beach.

Family owned and operated Bounces R Us boasts more than 5,000 square feet of inflatable structures, freeing kids to bounce, climb, and slide in a novel, safe environment. During open-jump hours, mini mountain climbers can scale a 16'x12' rock wall or perfect their slippery banana-peel impressions as they slide down a 19-foot dump truck. Batman- and princess-themed bounce units host a variety of inflatable obstacles for little ones to gleefully bounce off of and into, and a pirate ship sends swashbucklers down a slippery 17-foot plank.

Kids can bounce around inside a Sponge Bob moonwalk or make their way to the bouncy belly of a tiger without first marinating in spices. While children run amok, adults can relax inside a calm room, replete with TVs and Internet. Parents and infants are free with at least one paid admission and family pet left for collateral.