He suffers from four rare skin diseases that force him to stay out of the Sun and its potentially harmful ultraviolet light. The foundation also provides cooling garments to children with Multiple Sclerosis, Spina Bifida, Cerebral Palsy and other disorders. The foundation recently provided more than 15 additional UV suits to families such as the Cardis. I t's important for astronauts to stay in shape to counter the effects of weightlessness. In the weightless of space, all muscles, including the heart, become weaker and start to deteriorate.
Astronauts use the treadmill or exercise bike and bungee cord themselves in place.
NASA technology and research has also led to improvements in bikes and trails. Electrical power from the battery, mechanical power from the pedals. A shock-absorbing suspension wheel reduces discomfort when traversing rough terrain or obstacles. Three spokes on the wheel act like wings, making the bicycle very efficient for racing. A prototype lightweight wheelchair using composite construction and computerized structural analysis is used for bicycles.