This highly-rated treadmill from Urevo has a versatile two-in-one design: With the frame up, you can run up to 7.6 mph, and with the frame down, you can tuck it under your desk to walk up to 3.8 mph.
Here’s how it works. I’ve been testing treadmills for almost a decade and while they might all seem to do the same job, I can tell you the difference between using a good or bad treadmill is huge.