Lauren sees a lot of people "going through repetitions way too quickly." Blazing through your reps means you're not working through the full range of motion of your muscles and joints. You're often sacrificing form for speed. The simple fix is slow it down, focus on the quality of your movement, and check your form. in the mirror. If you're not sure you're doing an exercise correctly, check with the front desk to find the trainer on the floor. There should be a trainer hanging out on the gym floor, helping gym patrons with questions on form and how to work certain machines.