GOOD NEWS: SPYKER GIVES YOU MORE POWER. BAD NEWS: SAME GOES FOR YOUR OPPONENT. The new X-BIONIC® SPYKER reduces sweat but doesn’t eliminate it. High-performance athletes consume up to 97 % of their energy to control body temperature, according to scientific research from the University of Dortmund in Germany. Similar to the principle of calf packing, or cold leg compresses when you have a fever, special 3D structures of the patented 3D-BionicSphere® System lead to a widespread dispersal of sweat on the surface of the skin. That promotes evaportive cooling, which saves energy. This natural turbo-charging effect gives you extra oomph for forward motion and transforms sweat into energy.