Your achy knees while running may be due to weak hips. Strengthen the hips and running may be enjoyable again... not to mention, these exercises help shrink your hips!
One Exercise to End "Lower Belly Pooch" every girl should read this!! This stretch will bring your hips back to where they should be, ease forward pressure on your lower back, and dial back the lower belly bulge. Also helps to stretch the tight hips to end lower back pain. DOING THIS!
These are NO JOKE.. My trainer sculpted my arms doing these here! Spider-Man Press-Up. Targets: Chest, Triceps, Abs, Obliques, Butt, Hips. Start in Push-up position, bring knee out to side to elbow, press up and return to start. Do 8 reps. Switch sides and repeat. Do 2 sets.
Basic Stretches For Tight Hips