Position your body in the seated leg curl machine by sitting down and adjusting the leg pad so that it rests on your ankles. Grip the handles at your sides and curl the weight towards your body. Squeeze your hamstrings at the bottom and then return the weight back to the starting position. Continue the exercise until you have reached muscular failure.
Tip: Make sure to keep full tension on the hamstrings by utilizing a full range of motion. This means curling the weight all the way down and by getting a full stretch at the top of the movement. Remember not to rest the weights at any point during the exercise as this will take the stress off the hamstrings and minimize muscle stimulation.