Lunges are an excellent exercise to stretch and develop the Quadriceps, the Hamstrings and the Glutes as well as the muscles of the hips. How to do: 1. Stand upright with your feet shoulder-width apart. Place a barbell across your shoulders. 2. Take a 2-3 foot step forward. Once the stepping foot is planted, the upper body and the front knee should not move forward … [Read more...] about Quadriceps Barbell Lunges