is not bent so tube 101 is not compressed and the one way valves 102 and 103 are loosely open before body movement there is no tube compression no flow of substance through the tube no rotation of the turbine and no electricity generated in this example there could be other one way valves along the tube leading upwards from the knee to the turbine and generator to help direct flow in a single direction the top portion of fig1 shows an enlarged oval perspective on the section of the tube 101 containing the turbine 104 and associated generator 105 in this example the section including the turbine 104 and generator 105 could be worn on a belt or if sufficiently small incorporated into a fabric pouch in a garment the zig zag lines shown interrupting the ascending tube 101 between the middle and top portions of fig1 indicate a discontinuity in the location and scale between the perspectives of the middle and top portions of the figure the oval perspective of the top section is enlarged fig1 shows this example from three perspectives before the knee bends fig2 shows the same example from the same three perspectives after the knee bends in fig2 the knee of leg 100 bends forward stretching and compressing tube 101 closing one way valve 102 further opening one way valve 103 forcing the flowable substance in an upward flow through tube 101 to turbine 104 rotating turbine 104 which drives generator 105 which generates electricity in this example this flow could be part of a self contained loop the portion of the tube exiting.