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@Finwillow77 @JWTeunissen Found this research for HRV is prepubescent: http://t.co/GUf7tT5z Confirming the older is better 2 monitor.
@Finwillow77 @JWTeunissen Found this research for HRV is prepubescent: http://t.co/GUf7tT5z Confirming the older is better 2 monitor.