Static weight machine exercises you must avoid at your gym

7. Seated Leg press
What it’s supposed to do: Train quadriceps, glutes,
and hamstrings
What it actually does: It often forces the spine to flex without engaging any of the necessary stabilization muscles of the hips, glutes, shoulders, and lower back.
A better exercise: Body-weight squats. Focus on descending with control as far as you can without rounding your lower back. Aim for 15 to 20 for a set and increase sets as you develop strength.