If you often feel stiff after you sit, if your shoulders feel so tense, or if your lower back aches now, your chair may be the reason. That strain is removed with an ergonomic chair.
Awkward positions tend to result because of chairs too soft, too firm, or un-adjustable. Tight muscles, also poor posture, in addition to even long-term discomfort result over time. You may think you're just tired at the end of the day, yet your seat may be the real culprit. Your seat is making for your body to work harder than it needs to.
Conversely an ergonomic chair gives support to your body. It helps you stay on track and lessens needless exertion. It also allows for you to focus upon your own tasks instead of discomfort.