The majority of guys, not based on what their age is, encounter this disorder at least once in their life. Stress, tiredness and low energy levels are known passion killers but you can do something about it and again Ginseng and Ginkgo Biloba are great body tonics. Another great one is: In this sexy iPhone app, iKamasutra Lite brings the famed Kama Sutra sex positions in your iPhone. Designed to add spice to the romance together with your significant other, iKamasutra Lite allows you to browse positions to test. The app may even monitor positions you've already tried, keep your favorites and allow you to make a "to do" list. Looking for new things to use, but can't pick? You can shake the phone to get a random position.