Photo: robertDouglass Every wonder what happens to all the calories you burn when you’re working out on the machines in the gym? Besides all the heat your body makes when you’re sweating it out, the machines waste a lot of energy generating the friction that your muscles work against. Wouldn’t it make sense to put that energy [...]Post from:
EcoRenovator.org
Grid-Tie Exercise Machines: A Long Overdue Idea
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