Let's talk about sex Certified yoga and shiatsu teacher Danielle Wiedmann will be giving tips for men and women on how to cultivate sexual energy. In a talk presented by the Natural Health Association of Hong Kong, Swiss-born Wiedmann will explore the meaning of sexual energy and how to use it in a more positive manner in a modern-day society. The talk - this Wednesday (7pm-9pm) at the Recital Hall, City Hall - will be illustrated by ancient Taoist charts. For more information on the talk call Catherine on 2530 3950. Pain relief Researchers have identified a key protein that controls severe pain, a discovery that might someday allow more relief for those who suffer pain from terminal cancer, chronic backaches and other problems, according to the journal Cell. The protein is known by the acronym DREAM. In tests on mice bred to have a defective form of DREAM, researchers discovered the animals seemed completely normal, except that their sensitivity to pain was greatly diminished. Pain is vital to survival, enabling us, for instance, to withdraw quickly from scalding water or sharp objects. DREAM, according to the new research, keeps people sensitised to pain. While there are many types of pain, disabling the DREAM protein seems to reduce them all, said Dr Josef Penninger of the University of Toronto, a co-author of the study. If researchers could find a way to disable the protein, it could lead to a new and perhaps more effective method of pain control, Penninger said. Safer sex Workplace safety authorities in an Australian state have launched occupational health and safety guidelines for the sex industry. Surprisingly, the list is not topped by sexually transmitted diseases. Instead, poorly lit stairways, rickety bed frames, dirty sex aids and repetitive movement injuries are among the chief dangers which prostitutes face in New South Wales. Pamphlets published by WorkCover New South Wales focus mainly on cleanliness and workplace equipment, as well as pointing out dangers such as slipping on bathroom floors or wrist strains from massages. 'Sexually transmitted diseases are a part of it, but a very small part,' said a spokeswoman for the Sex Workers Outreach Project, which helped draw up the guidelines. She said normal health and safety considerations had not been of much concern because of the industry's traditional underground nature. But since brothels were legalised in New South Wales, they were becoming more like any other workplace. In addition to English, the pamphlets are available in Thai, Chinese and Korean. Mobile phone focus A Sydney hospital has launched what is believed to be the world's first trial into the long-term effects of prolonged use of mobile phones. Using a Transverse Electro Magnetic (TEM) Cell device, the Centre for Immunology at St Vincent's Hospital has been simulating the impact of long-term chronic intermittent exposure to electromagnetic radiation through mobile phones. The director of the centre, Professor Ronald Penny, said the research was unique as most studies focused on short-term exposure on cells or animals, which did not help in understanding the effects of years of regular mobile phone use on the tissues of the human brain.