How does a military push-up differ from a regular suburban American push-up? To the extent that there is an answer, it's not as much as you might think.

Both the chin up and neutral grip chin up are great exercises, but one may be better than the other in certain situations.

Running and swimming are two common forms of exercise, but they're not equal in meeting the goals of every exerciser.

Soreness in the arches of one or both feet is one of the most common afflictions distance runners face. While this kind of injury often resolves quickly without specific treatment, it can linger for weeks or even months if you don't address the underlying cause or causes and take active steps to speed healing.

Ab exercises can cause muscle strain or back pain if performed incorrectly. Avoid negative side effects by using safer exercises and plenty of rest.

Your anterior cruciate ligament, or ACL, helps stabilize your knee during physical activities like running. A partial tear or complete rupture of your ACL can lead to knee instability, pain and swelling.

Yoga can help improve many markers of fitness and health. However, whether it gets you "in shape" depends on your your definition.

Running is an effective way to lose or maintain body weight, bolster your cardiovascular fitness and give your legs an excellent workout. Because it is an intense form of exercise, you can expect a given level of soreness and fatigue in your quads, hamstrings and calves.

Warm up intelligently before a Pilates session. Bring attention to the breath and increase mobility in the spine and hips.

Get a strong, toned lower back and waist by doing bicycle crunches and plank variations, including weighted planks and stability ball planks.

Muscle spasms can make it difficult to move your shoulders. They might even cause pain. Exercises help decrease spasms and help these tight muscles relax.

Shoulder presses in front of the face and behind the head can both be effective, provided your shoulders and core are healthy.