That ensures that you sit comfortably and in balance regardless of whether you are short and light or tall and heavy. The chair follows your every movement – whether you stretch back or lean forward over your desk. And best of all, you’re in control of the chair, not the other way around. Ever wondered what the best position to sit in is? It’s always the next one! An ergonomic chair is one that follows you naturally into your next seating position. It should heed the body’s movements, both small and large, and stay still when the body wants it to.