Ab Ripper X is the core component of P90X, one of the best-selling workout DVDs in history. It's a 90-day program, but how long does it take to see results?

Staying active is an important facet of a healthy lifestyle, so choosing the most effective mode of exercise can be essential to planning your routine. If you have narrowed your choices down to jogging and trampolining, it may be wise to keep both options open for a cross-training program.

Jogging is a simple and flexible form of exercise that requires little in the way of special equipment or facilities. In comparison to running, jogging is gentler on your knees, hips and ankles. Jogging can help you lose weight, as you burn more calories during jogging than while sedentary.

Tight muscles in one are of the body can pull your spine out of alignment and cause back pain. Stretching and foam rolling can help.

Treadmill training can alter your body composition, allowing you to lose fat from your entire body, including your legs. Working out on a treadmill tones your lower body muscles, strengthening your glutes, hamstrings and quadriceps.

Heaviness in the legs while running can range from mild to debilitating. It can be caused by a variety of factors, conditions and training errors. Leg heaviness can be frustrating and prevent you from finishing your running routine.

A regularly occurring dry cough after running is often brought on by exercise-induced asthma, also known as exercise-induced bronchospasms. A respiratory infection could also result in a dry cough, so consult with your doctor for proper treatment.

Every women experiences her menstrual cycle differently. It's safe to practice yoga, if you feel up to it.

Running is an intense exercise and can be hard on your legs. That's why having tired, or sore, legs after running is not uncommon. There are various and multiple causes for tired legs.

A physiotherapist from the mid-20th century, Dr. Vladimir Janda discovered both the upper and lower-crossed syndromes. The upper-crossed syndrome is a muscle imbalance in which the upper back is weak and the chest is too tight, pulling the shoulders and head forwards.

What you eat influences your training. Pick healthy carbs, proteins and fats to support your 5K goals.

You’ll eventually get faster and be able to run longer just by logging regular runs, but if you want to focus on increasing running speed and distance, specific techniques can help you along the way. When working on speed and distance, listen to your body’s signals. Running beyond your capability could be dangerous.