Running with good form will keep your body happy and out of the doctor’s office. Plus, you’ll look like a real runner. Sharpen your step with these pointers from exercise physiologist Dr Lisa Micklesfield.

Find a stride that’s comfortable for you, and keep your core muscles firm to protect your back. It may help to take quick, short steps instead of longer strides, which can hurt your lower back and tire you out.

Land lightly between your heel and mid-foot, and let your foot roll smoothly forwards. Push off with your toes.

Look ahead and scan the horizon to prevent slouching (unless you’re running on a trail or other unpredictable surface).

Relax your arms and bend them about 90 degrees, letting them swing forwards and backwards, without crossing your midline, between waist and lower-chest level. Cup your hands loosely.

Lean forwards about five degrees to maintain momentum without sacrificing your posture. (To get the approximate feel of five degrees, stand still on both feet, then shift your weight towards the balls of your feet without lifting your heels.)