Popsugar Fitness Fitness Tips Why the Back of Your Knees Are Tight and Stretches For Them 2 Reasons the Back of Your Knees Are So Tight, and the Stretches That'll Help August 22, 2020 by Lauren Pardee View On One Page Photo 1 of 4 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Downward Dog From your hands and knees, straighten your knees, press into your hands, push your hips back, and drive your heels toward the ground. In this position, pedal your heels up and down 3-5 times, then press them toward the ground and hold for 30 seconds. Previous Next Start Slideshow Fitness TipsWorkoutsYoga SequencesInjury Prevention