When it comes to sitting at your desk, there is a lot you can do to reduce those aches and pains. Most jobs require us to spend hours on end at the desk, be it at home or the office. Humans were designed to move and be active - which is difficult to achieve if you're spending most of the day (and even sometimes the night) at the desk. I often get asked "what is perfect posture?" and in fact, every person has their own perfect posture owing to our infinite differences. Perfect
