Though it's difficult to see them, colons need to be kept clean to maintain healthy immune systems and score hot dates to the gastrointestinal prom. Increase internal popularity with today's Groupon: for $44, you get a 60-minute colon-hydrotherapy session and consultation at Holistic Health Solutions of Long Island in Huntington Village (a $110 value).

The certified practitioners at Holistic Health Solutions of Long Island work to cleanse, detoxify, and rejuvenate patients with treatments including acupuncture, infrared sauna, and colon hydrotherapy. During each 60-minute colon-hydrotherapy session, patients convince health-inhibiting buildup to skedaddle after a series of passive-aggressive post-it notes and gentle flushings with filtered water. The FDA-approved procedure helps to induce natural evacuation without the use of harmful drugs, and it encourages colons to function healthily. After treatments, newly purified intestinal tunnels dedicate themselves full-time to immune systems without obstruction from internal roadblocks or tollbooths that only take exact change.