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lot of the reviews online say the store ones are cheapier built, does it have grey or black rollers? [black ones are suppose to be better, folks also said they greased the bar its rides on.]
They also mention the knee thing, folks just get garden knee pads to use.
Also many said you need to go beyond the 3min thing, most were at 30+ min a day, in 15 min cycles.
The motion and position is what attracts me other wise id just do 100s of situps a day.
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