Some people may benefit from the glycine in gelatin. In a 2006 research, persons who took 3 grams (g) of glycine before night reported sleeping better and felt more energetic and clear-headed in the morning. Other substances present in gelatin that may have some effect include alanine, arginine, ascorbic acid (vitamine C), glutamic acid, proline, and serine. Gelatin has been used for many years to soothe muscles and joints when taken orally. It is also applied directly to sore spots after a long day of skiing or hiking, or even just after a hard workout. The gelatin helps reduce pain and stiffness while promoting healing and recovery. People who don't eat meat but still want the benefits of gelatin can take a supplement containing glucosamine and chondroitin sulfate. These are two natural compounds found in cartilage that can help reduce pain and inflammation associated with aging bodies. They can also be used together as drugs called synonyms-flavonoids that treat arthritis by reducing joint pain and swelling. Last but not least, eating jelly beans before bed will probably not help you sleep but it might make you feel like you need to pee about 4 hours later!