https://output.jsbin.com/vuxisocugu/
https://zenwriting.net/kitewed....ge9/why-we-do-we-lov
to traditional motorised treadmills the treadmills that do not have electricity are powered solely by the user's movement. These treadmills that are self-powered can be used to perform a variety of fitness workouts as well as HIIT. Previous gait retraining research has suggested that running on a curved non-motorized treadmill causes a shift in gait patterns. This could result in an increase in running efficiency and decreased ventilat