Sure, it's tempting to get comfy while you answer emails — after all, you're probably in sweats anyway — but your bed and couch are probably a little too comfy. "Neither allow you to be in proper positions for working on a laptop or computer," Wang said. In order to have good posture, you should think of your body as a "multi-level building," he explained. "Ideally, we stack levels over one another. Ears should align over the shoulders, shoulders over the hips, hips over the heels (when standing)." In other words, leave the semi-vertical lounging for your Netflix marathon.