Photo: Michael Frank, Woodway

Burning excess calories while generating electricity sounds too good to be true, but that's what Woodway's latest fitness machine is all about. The EcoMill is a manually-powered treadmill that uses zero electricity. The self-sustained machine works by converting your own energy into precious watts, thereby saving a few watts from the grid. The EcoMill's drive system allows you to stay fit without increasing your carbon footprint. I tried it at a recent fitness trade show and found myself powering a generator, which converted the energy into electricity to power the display and the elevation system. Extra energy is stored in the treadmill's battery when it isn't in use.

Clunky? No! It looks sleek, curvy and Jetson-like, but I also expected a non-electric treadmill to feel rough and, well, manual, under my sneakers, but not one bit. In fact, Woodway's patented design incorporates shock-absorbing rubberized slats and smooth-rolling ball bearings to create a less-stressful workout for the lower-body. (These old tired hips thank you, Woodway engineers!)

Loud? No! I thought a manually-powered exercise machine would make crazy-loud noises, but again, the result is an amazingly-quiet treadmill scientifically proven to provide the ideal "softness" to eliminate the harmful shock to connective tissue and muscles. When I questioned Eric Weber, Woodway's sales and marketing director, he explained that the sophisticated curved design is the culmination of years of non-motorized development, but the key ingredient is the near-frictionless drive system, which allows the running belt to move freely.


Expensive? Heck, yeah! The price tag starts at $5,500 and runs double that for commercial versions available in health clubs. (That's nearly double what other treadmills manufactured for home use cost, FYI.) "Another huge advantage to using this EcoMill is that that there are thousands of workout combinations which will keep users interested and dedicated," Weber told me at the show. Look out for these popping up at green-minded (and deep pocketed) gyms soon!

AOL Health has great inspiration on running and walking workouts, no expensive equipment required.