Frank Schauer - 6 weeks done in Kenya 🇰🇪 , 2 more to go before going back home ✈️ . Doing the next session tomorrow 5km-4km-3km-2km-1km with 1k float 🏃♂️ #timetofly #intervals #
PDF) The accuracy of the optical heart rate- measurement and distance- measurement of a fitness- tracker and the consequential use in sports