BMR (Basal Metabolic Rate) - the rate at which the energy is needed for body maintenance

Ballistic Stretch - This involves dynamic muscle action where the muscles are stretched suddenly in a bouncing movement. For example, a ballistic stretch for the hamstrings might involve touching your toes repeatedly in rapid succession. The problem with this stretching technique is that rapid stretches invoke a powerful stretch receptor response that can result in injury. Further, after you do these exercises, the stretch receptors are overactive. This may lead to injury during an activity such as running or playing tennis.

Carroll, Noel - Collegiate standout at Villanova, Irish-native. Carroll coaches and writes on the sport for the Irish Runner magazine.

Endomorph - The endomorph is characterized by a round physique, carrying extra body fat. The endormorph is has a large bone structure, and has a good portion of muscle mass. The endormorph has a wide thorax (rib cage), which makes a large angle with his ribs. It is sometimes more difficult for an endomorph to keep weight down, but it is entirely possible that an endormorph make great gains with his or her training to the point where it may even seem as though his or her body type has completely changed!

Jorgensen, Julius (1880-1937) - Danish long distance runner. Took 23rd in the Olympic Marathon in 1908 (3:47.44,0), he also competed in the 5 mile olympic race, where he ran 28.08,8.