4. Mirror mirror
Check yourself Flexboy, those mirrors aren’t for creating Tinder profiles. They’re in the gym so you can keep your technique where it should be. If you aren’tholding a weight there’s no reason to look at a mirror. Things to look out for in mid-session include barbells that aren’t parallel to the floor (indicating muscle fatigue in your less dominant form) or a swaying torso (meaning you’re using momentum rather than distinct muscle groups to get a weight up and down).