"Maintaining proper postural alignment and switching postures can ward off aches and pains when working from home," says physical therapist Sarah Kostyukovsky, P.T., DPT, OCS. If you don't have an ergonomic desk chair to provide the ideal support, try these hacks: Put a lumbar roll, or a rolled up hand towel, behind your back to maintain a curve in the low spine. "Our lumbar curve puts the rest of our spine in better alignment," she says. "Try it! Slouch and then sit up straight with a curve in your low back and see what happens to your pelvis, upper back and neck and head." Um, wow.