Many home treadmills consist of adjustable incline settings
https://treadmilleupt192.evercolumn.com/posts/how-to-recognize-the-treadmills-for-sale-uk-which-is-right-for-you
Many home treadmills include adjustable slope settings, allowing you to imitate outside terrain for more powerful legs and much better workout variety, whether you're training for hills or burning more calories.