would find it hard to credit anything other than our thighs. And for good reason. The muscles that make up our upper legs drive our running – whether we’re sprinting for 100 yards or battling our way through 26.2 miles. Run enough hills and you
– to 12 o’clock – with your right foot, lowering yourself into a lunge position. Return to the standing position. Keeping your supporting leg in the same position, lunge forward again, this time diagonally to 1 o’clock. Repeat the lunge to 2 o
