Here is a manual curved treadmill that helps you burn more calories in comparison to motorized treadmills. The IN10CT Health Runner has rubber slats and a PU belt to reduce impact to joints. It has a display to show your time, distance, calories, and heart rate.
The IN10CT Health Runner has a 17.16 x 16″ running surface. It has max weight capacity of 400lbs. This treadmill is powered by you, so the more effort you put in, the faster this gets.