SHIBAURA INSTITUTE OF TECHNOLOGY IMAGE: WHILE LONG-DISTANCE RUNNING HAS BECOME A POPULAR FORM OF EXERCISE, IT CAN CAUSE MUSCLE FATIGUE AND DAMAGE. A NEW STUDY FROM JAPAN HAS NOW DISCOVERED THAT LONG-DISTANCE RUNNING, LIKE IN A MARATHON, AFFECTS VARIOUS FOOT MUSCLES WITH VARYING RECOVERY PERIODS. THE STUDY FOUND THAT RUNNING A FULL MARATHON CAN DAMAGE...