Seated Leg Curl
A commonly misinterpreted exercise the Seated Leg Curl can be crucial for training the hamstrings in the their mid to lengthened range.
Make sure your pelvis is unmoving by ensuring the seat back is properly set up to stabilize your pelvis and hips. The thigh pad should be tight enough that your thighs can not move up or down during your set.
As you allow your legs to come up imagine slightly driving your heels away from you. Then driving your thigh up into the pad and contracting the back of your leg without momentum can ensure an efficient amount of tension in the hamstrings.
Bonus Tip: Starting at the bottom (legs underneath you) at a 100% contraction can help each individual understand where they’ll need to go or end up once performing the rep.