Too much endurance exercise, like marathoning, can cause myocardial damage. Some discussion here: http://forum.lowcarber.org/archive/index.php/t-403371.html ht

Too much endurance exercise, like marathoning, can cause myocardial damage. Some discussion here: http://forum.lowcarber.org/archive/index.php/t-403371.html http://forum.lowcarber.org/archive/index.php/t-403371.html. If you want to run, do sprints.