| CPC A61B 5/4561 (2013.01) [A61B 5/6804 (2013.01); A61B 5/746 (2013.01); A61B 2560/0223 (2013.01)] | 20 Claims |

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1. A device, comprising:
a first housing portion having a tilt switch, a vibrating element, and a visual indication device, the first housing portion being spherical; and
a second housing portion rotatably coupled to the first housing portion, the second housing portion having an attachment element configured to couple the second housing portion to a user,
the tilt switch fixedly mounted in the first housing portion and senses a change in position of the first housing portion,
the tilt switch configured to detect deviation of a muscle position of the user relative to a desired muscle position of the user when the attachment element couples the second housing portion to the user,
the vibrating element configured to provide a haptic indication and the visual indication device configured to provide a visual indication in response to the tilt switch detecting deviation from the desired muscle position of the user by a predetermined amount, the predetermined amount is configured to be adjusted through rotating the first housing portion with respect to the second housing portion.
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