I know that everyone advises not to worry...but i am literally jogging slowerthan i walk on my "rest" days. Today i passed a landmark as app said 4 mins left. At the end of the run i turned for home and passed the landmark just as my 3 minute walk was over!! That seems impossible but true! I should maybe add i began the app 6 wks post hip replacement. It is like my body forgot how to move quickly...any advice?