(The Conversation) – Are you sitting comfortably? Just pause for a moment and without adjusting, notice your posture. What are your legs doing? Are they crossed? And are you a right or left crosser?

Most of us were told off at some point for how we sat. “Don’t cross your legs, you’ll ruin your knees.” “You’ll get varicose veins.” “Sit properly.” “Sit up straight.” It belongs to that familiar pile ...