Treadmill Health Warning (Whether You Walk Or Run On It)

Healthier alternative: 
walk, jog or run outside - more sensory input (sounds, sights, smells, temperature) and variety, fresh air, variety of terrain, more stimulating for the brain, joints, muscles and other soft tissue.
Outdoors you are more likely to use hip extension - but not necessarily! If the bulk of your day is spent in a sitting position (at a desk, in transport, eating, relaxing, cycling or rowing), your body will retain that shape!