Fast Rest

DAY 29: Faster walking outside?

Went out for a short walk to the post office and back this morning. On my return I calculated I'd walked about 1.5k at a leisurely pace, stopped at lights 4 times and queued at the post office and took me a little bit over 25mins. So how come walking at a fair pace for 30mins only travels the same distance on the treadmill?? Weird huh?