Episode 012 of Gravity@1053? is uploaded, if you dont subscribe to the feed with a podcatcher, you can follow THIS link to download the show the old fashioned way.
This episode was recorded during one of my lunchtime runs on the James White Greenway. During the run, I attempt to find my maximum heartrate as to have starting point for a new approach (new to my training) to my marathon training for the fall.
PLANET3RRY 
I enjoyed this episode especially. I am now motivated to review my records and see what my max heart rate has been lately (during runs in which I did not try to find the absolute maximum).