the amount of energy generated depends on the materials of the floor and on your feet, temperature, humidity, how windy it is outside(no kidding). electronics damage is hard to evaluate sometimes...not all damage is immediately apparent as components sometimes degrade rather than fail. If you are careful and discharge yourself periodically and take care not to generate any charge by shuffling or sliding your feet, you will rarely have any problems...best to touch the metal case of the power supply when still plugged in to the wall, so the charge will dissipate to earth ground. If you touch the case while unplugged, you will put yourself and the case at the same potential, which should be fine in almost all situations.Avoid touching your monitor glass when playing with RAM.