With built-in speed controls and pre-programmed programs

https://home-treadmillwomr414.juniperbrief.com/posts/three-reasons-why-the-reasons-for-your-treadmills-is-broken-and-how-to-repair-it

With built-in speed controls and predetermined programs, home treadmills make it simple to follow directed exercises that support fitness objectives like endurance, fat loss, and endurance, even for novices.