Energy Harvesting
See http://www.advancedcerametrics.com/files/File/articles/adcera_200710.pdf.
"Perhaps the most well-known of the
ACI PFC solutions have been those for
active sports equipment for Head NV’s
family of Intelligence™ “smart” tennis
rackets and skis. In these unique products,
the PFC acts as a sensor of vibration,
an energy harvester (converting
that energy to electrical power for the
dampening circuit) and an actuator to
dampen the vibration. The positive
result for the smart skis is better control
and speed, and the result for the tennis
racket application is enhanced comfort,
elimination of tennis elbow and better
control dynamics with the racket. A
number of other consumer-oriented
sporting and leisure goods are in the
works."
You could modify the garment to reduce bounce by harvesting energy to run a damper. This would remove some of the fun as well as making the bra around ten times its size with all the mechanical and electrical add-ons. Still a worthwhile project.