From Amazon to your coworker’s cubicle, under-desk treadmills are everywhere. What makes the LifeSpan TR1200 DT3 different from the rest, and why do we recommend it to most people? We’ve been using LifeSpan under-desk treadmills for years, find out why we can’t get off the LifeSpan TR1200 DT3 in our review.
