Serious face for serious running. Laced up the #niketemponextpercents for a good tempo run chosen from #polarflow #fitspark #temporunning #sundayrun #polarrunning #oldguysrule

Test run today with my new #polarH10 HR chest sensor. No need for a training watch or wrist computer. #polarH10 connects via Bluetooth to my cellphone. Polar app #polarbeat provides helpful training guidance during the run and also records gps and HR data. Polar app #polarflow provides a nice environment to review and plan training sessions, progress and results. Nice job #polar