Leaning on the handles
Don't mistake the handles on your treadmill for the banister along a stairwell. They're not there to bear your weight but for you to hold as you check your pulse or grab on in an emergency (make sure you wear the safety clip too though). If you notice you're holding on during your workout, Moody says, "You probably need to reduce your speed so you can maintain your natural form" since, he adds, "By holding onto the sides or front of the treadmill, you may restrict the natural hip movement."
(Also, here are the best leggings to wear when exercising indoors.)
9 Terrible Treadmill Mistakes that Make Trainers Cringe, Source:https://www.besthealthmag.ca/best-you/fitness/treadmill-mistakes/
