5 mph for 5 mins, then 5.5 mph for 10 mins, 5 mph for 5 mins again.
I hope that my heart rate would stay around 155 bpm,but it seems not so easy.
5 mph for 5 mins, then 5.5 mph for 10 mins, 5 mph for 5 mins again.
I hope that my heart rate would stay around 155 bpm,but it seems not so easy.