Thanks for this work.

Question: Have you thought about how a green gym could be marketed? What would be the incentive to highlight, to get people to join a green gym instead of a traditional one?

Great job finding a solution to multiple problems at once.
To piggyback on Jim’s question a bit: What would be the incentive for gym owners to have these type of machines rather than traditional ones?

This is definitely a fun idea to harness work that’s already being done. I’m wondering if you’ve tried to do some simple calculations of how long it would take to make enough electricity to balance out the cost of these added components?

I like that you tested your idea with an exercise bike. How did you measure the energy output? Do you have any ideas for increasing the output?

It is a good idea, but how will one motivate people to go to the gym? Many have busy days, and at the end of the day, are unwilling to go to the gym to work out. Also, many of the machines in the gym require energy to function (e.g. treadmills). Will this outweigh the costs (no pun intended)?

This is a great idea. Your idea not only reduces greenhouse gasses but helps America’s increasing obesity rate. I have heard of other ideas similar to this particularly being used in jails. I did a little bit of research and here is what I found “By pedaling the prison’s stationary bikes, the inmates charge a battery that’s used to power 10 street lamps along the town’s riverside promenade. For every three eight-hour days they spend on the bikes the voluntary participants get one day shaved off their sentences.” With this information would you want to expand your product into jails? Are you focusing primarily on home gyms or large fitness centers?

What is the feasibility of incorporating these generators into all exercise equipment? How much must a person exert themselves to yield the output you are referring to? And for how long? a little fishy that your group jumped from bottom to top in a couple of hours…

Great idea which can be extended to power small personal appliances.
Setting up small ‘energy stations’ where one waits for public transportation, public libraries, schools et al might motivate people to use exercise to go-green.