Bhekasana (frog pose) is an excellent yoga posture for the front line of the body, including feet, ankles; thighs and groins; hip flexors, the abdomen, chest, and throat. I love this pose for runners, in particular (provided they have healthy knees), as it quickly became a favorite pose of mine while training for the Boston Marathon. You’ll notice it resembles a simple, pre-run “quad stretch” that you might do standing up. Take it slow initially; you should never feel pain, especially in the knees.
In yoga classes, you may practice another form of “frog pose,” too, which focuses more on the hips and groins. This variation is called mandukasana.