A strong back leads to better posture and ease of movement in sports and everyday tasks. Build a healthy back with body weight exercises you can do at home.

The army physical fitness test requires each cadet to perform a certain number of push-ups, which are specific to their age and gender.

Military push-up and sit-up workouts rely on high repetitions and low rest times to prepare candidates for fitness tests and the battlefield.

The CrossFit training method, as its official website notes, is known for having no limits. CrossFitters do not adhere to any one training system, but incorporate them all to ensure that you increase your endurance and flexibility as well as your strength and speed.

Fatigue is a natural consequence of hard work and exercise. If you overstep your energetic boundaries while running, your body makes energy anaerobically, or without oxygen. This process often occurs due to overtraining and inadequate nutrition. Rest, proper diet and the right training can improve your endurance.

Sciatica can make it hard to sit, stand or walk. Symptoms of sciatica include sharp pains running down the back of the leg that starts at the buttocks. The sciatic nerve branches off from the lumbar and sacral spine and runs through the pelvis and down the back of the leg.

The chin-up is a very challenging upper body exercise that uses many muscles of the upper body including the biceps, back muscles, chest, and abs.

Pull-ups are generally a back, biceps and shoulder exercise, but they do require ab activation for stabilization and breathing.

Daily activities require your muscles to work together. Exercising your lower back and hips together saves time and energy.

In order to correct swayback posture you'll need to do stretching, strengthening, and breathing exercises.

Stomach aches after running aren't all that different from stomach aches during running in that there are a number of different possible causes.

Burpees and running are two cardiovascular exercises that should be incorporated into your workout routine.