Many home treadmills include adjustable slope settings

https://home-treadmillsguzr210.lakeviewbrief.com/posts/5-laws-everybody-in-cheap-treadmills-should-be-aware-of

Numerous home treadmills consist of adjustable incline settings, enabling you to simulate outdoor surface for more powerful legs and better exercise variety, whether you're training for hills or burning more calories.