Crazy Fit Massager Body Vibration Plate Exercise Machine
A vibration machine could affect your health in positive ways, but it could also harm your health. If the vibration is under 20 hertz, it could harm the body as people in certain occupations like truck driving have learned. So you need to know exactly what frequency you are setting the machine on. Unfortunately, the instructions to this machine provide no information about the frequencies. There are different speed settings from 1-20, but these are just relative numbers that reveal nothing about the actual frequencies. I couldn't find anything elsewhere on the Internet either. Also, the instruction manual is very poorly written. The model is made in China.
The unit is pretty heavy and the construction is solid steel. Having just bought it, I have no idea how long it will last. I definitely think it deserves to have one star knocked off due to the lack of information since it could negatively affect one's health. If anyone can find this information, please post it in a comment.
More expensive units should come with some detailed information to inform reassure you about correct and healthy ways to use the machine. But you shouldn't have to pay more for this information.
By the way, when using these machines you should not stand with legs locked and upper body fully upright because it will cause excessive shaking of the internal organs.
(I changed my opinion somewhat after writing this review and upgraded the product from 3 stars to 4 stars. Comparable products are better quality I guess, but way more expensive. Please see my later comments).
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