The Hypervibe G17 Pro is the best exercise machine on the planet. I received the Hypervibe G17 Pro on February of this year and working out with gravity resistance training has proven to be very effective, saving time at the gym by working out smarter, and not harder. I am a runner and gravity resistance training on the Hypervibe has given me more energy and endurance in my races. After a race, I get on the Hypervibe for instant recover as any muscle tightness or stiffness vanishes after a 10 minute session. I vary the speed, starting at 8hz for a 2 minute warm-up, then up to 20 hz for 3 minutes, 24 hz for 3 minutes, finishing at 35 hz for 2 minutes. Usually, after a 10 minute session, I don't feel like getting off, so I do another 10 minutes. By standing on the side of the Hypervibe, I can even get the effects of a linear vibration machine. I workout the upperbody by doing push-ups on the Hypervibe, both static and dynamic push-ups, and for the abs, planks are very effective. This is one exercise machine where I don't feel like gettin off. I have spend up to an hour working out on Hypervibe and after the session, I feel no soreness or fatigue. Purchasing the Hypervibe is one of the best investments I have ever make. Any investment for personal improvement is worth it and Hypervibe delivers results. I am happy to say I am a Hypervibe athlete.