Racing RAC4000T-A3 Original Instructions Manual page 7

- Take breaks.
The following factors shorten the duration of use:
- Personal tendency to suffer poor blood supply to (symptoms often cold fingers, tingling);
- Use at low ambient temperatures;
- Force exerted on the handles (a very firm grip discomfort irrigation blood).
If you regularly use the machine for long periods and that symptoms listed above (e.g. tingling fingers)
is show several times, it is recommended to get by auscultation a doctor.
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