A Conversation for Aerobics Classes
Define "work"
Malabarista - now with added pony Started conversation Jul 18, 2007
>>Plus, step aerobics actually involves 'work' by the muscles in the gravitational sense.<<
Actually, speaking in a strict physics sense, it's not work, because everything that's lifted comes back down still weighing the same (unless you sweat extremely on every lift) - so in the complete cycle, the mass is back at the energy level at which it started, and no actual "work" has been done 
Define "work"
Administrator-General (5+0+9)*3+0 Posted Aug 11, 2007
Step aerobics students have no practical way to harness the periodic gravitational energy they gain during a workout. Science *could* give them springboots or something, to let them keep this energy... but then it wouldn't be so much of a workout, would it. 
Define "work"
Malabarista - now with added pony Posted Aug 11, 2007
So don't let *them* keep the energy, harness it to power the lights in the gym 
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Define "work"
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