Olympic cheats have come up with yet another way to enhance their performance at this years Olympics in Beijing: Inserting drugs through tattoo needles increases the effect of drugs, meaning athletes can take smaller doses and “fly under the radar” in dope tests. Research in Germany has shown that delivering DNA vaccines via tattoo was 16 times more effective than injecting through the muscles or veins as the vibrating tattoo needle prepares the body’s immune system and increases the body’s response to the drug. Cheating athletes are also combining the erectile dysfunction drug Viagra with doses of nitrous oxide, or laughing gas. Both drugs increase the flow of oxygen in the blood stream and therefore boost sporting performance.