A mechanic was removing a cylinder-head from the motor of a Harley motorcycle when he spotted a well-known cardiologist in his shop.

The cardiologist was there waiting for the service manager to come and take a look at his bike when the mechanic shouted across the garage:

“Hey Doc, want to take a look at this?”

The cardiologist, a bit surprised, walked over to where the mechanic was working on the motorcycle.

The mechanic straightened up, wiped his hands on a rag and asked,

“So Doc, Look at this engine. I open its’ heart, take the valves out, repair any damage, and then put them back in, and when I finish, it will work just like new. So how come I make $39,675 a year and you get the really big bucks ($1,695,759) when you and I are doing basically the same work?”

The cardiologist paused, smiled and leaned over, then whispered to the mechanic.

“Try doing it with the engine running”