AvatarSara Pearceflipped into PicksAvatarAvatarIf You Sit All Day, Unwind Every Tight Muscle With These 12 Expert-Recommended Yoga Posesverified_publisherPOPSUGAR - Maggie RyanSitting all day does a number on your body. Your hips are tensed and flexed, your back is knotted, your lower body sore and numb. The best thing that I've found to relieve all the tightness and soreness (because standing desks can only do so much) is yoga. Melting into a relaxing sequence at the …