How strong is your core? Watch 窪蹋勛圖厙's , , teach you how to do the inchworm exercise, and you'll be able to gauge where you're at; plus, build up core strength in the process.
–Aileen Torres
Lab Rat Workout: The Inchworm
New perk: Easily find new routes and hidden gems, upcoming running events, and more near you. Your weekly Local Running Newsletter has everything you need to lace up! .