With built-in speed controls and pre-programmed programs

https://treadmillsizt990.focalledger.com/posts/10-things-you-learned-in-kindergarden-that-will-help-you-get-treadmill-buy

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