If your ergo expert is talking about auras instead of measuring your dimensions and evaluating your posture, you need to find a real ergo expert. Even for ad-hoc use in meeting rooms and hotel rooms, a good expert can help you do a better job and protect your nerves. Anyone who works at a computer all day should probably go at least once a year, just like an annual physical.

http://mindfulmotionphysicaltherapy.com/what-is-an-ergonomic... (For info purposes - not endorsing this particular practitioner.)