The P90X chest and back routine consists primarily of various push-ups, pull-ups and chin-ups, with three exercises that utilize free weights.

Swimming gets your blood pumping, raises your heart rate, boosts your lung capacity and burns calories.

Muscular endurance is the ability of a muscle to repeatedly exert force against resistance. Many factors contribute to muscular endurance, including genetics.

How much money personal trainers make varies widely, depending on where they work, how much they work and their credentials.

A mixture of long, slower paced cardio, intense cardio intervals and sport-specific drills will help you build the stamina necessary to smash your opponents.

Strength is the ability to move heavy weight, power is the ability to move weight with speed and endurance is the ability to perform many repetitions.

Aerobic exercise is activity that can be sustained; anaerobic exercise is intense activity that cannot be sustained.

Your heart’s ability to return to normal levels after physical activity is a good indicator of fitness. A healthy heart will recover quickly in the first three minutes after stopping exercise.

Find out how fit you are with some simple physical fitness tests and activities you can do at home.

A skilled physical therapist can help you heal and prevent any future problems resulting from an improperly healed injury.

Perform somatic exercises at home in a quiet place while lying on a mat or a thick carpet. Move slowly and mindfully and try to experience movement from the inside out.

Get through LIVESTRONG.COM's 10,000 Steps a Day challenge with a little help from your friends (or coworkers or family members)!