Trainers Cringe Every Time They See These Gym Mistakes

If you've never had proper one-on-one training, navigating the different accessories and machines in a workout class or the gym can be a minefield. Everyone else always seems to know exactly what they're doing, so asking for help can be intimidating. If you've shied away from seeking guidance, personal trainers and fitness experts have a resounding message: Always speak up. We know—it's awkward, but even a seemingly simple mistake like changing the alignment of your feet can lead to injury.

To avoid a sore back or worse, and to ensure you're not wasting your time at the gym, we called on personal trainers to share the most common workout mistakes they notice—and, more helpfully, how to fix them. Take note: This is how to correctly squat, cycle, and more.