Despite warming up wearing it, the HRM is very erratic and can take up to 15 minutes to settle before giving a believable score. I've tried the usual tightening the strap and wetting the back to no effect. Any suggestions?
Despite warming up wearing it, the HRM is very erratic and can take up to 15 minutes to settle before giving a believable score. I've tried the usual tightening the strap and wetting the back to no effect. Any suggestions?