Good ergonomic posture has to do with the natural balance and alignment of your spine and skeletal system. There are a lot of specific body parts and positions, here are a few key points to pay attention to when sitting: • Head is neutrally balanced• Chin is parallel to the floor• Shoulders are even and neutral - not slouched forward• Spine is neutral - no hunching or arching of the upper or lower back• Upper arms hanging at your side, elbows directly below the shoulders, and hands parallel to or slightly lower than the elbows • Hips/pelvis level and tilted slightly forward (as when you're standing)• Knees slightly lower than your hips• Feet flat on the floor• You can also sit with your feet back and under your seat. This position will still maintain your spinal and core posture