With built-in speed controls and predetermined programs

https://treadmills-ukgcmy375.keystonescope.com/posts/why-adding-a-gym-treadmill-to-your-life-will-make-all-the-different

With built-in speed controls and preset programs, home treadmills make it simple to follow directed exercises that support physical fitness goals like endurance, weight loss, and endurance, even for beginners.