note that non-conservative forces do not always reduce the mechanical energy; a non-conservative force changes the mechanical energy, so a force that increases the total mechanical energy, like the force provided by a motor or engine, is also a non-conservative force. the only way to find out if you suffer from one of the above is to be examined by your surgeon. how can he learn to behave differently? if you had ed would you? there’s a phone number, 1-844-90-goals, but you can also click the link above to find a coach. 