Opening a boxing gym is much like opening any other small business, but you might want to get some advice from other gym owners.

Why can some fighters take a punch and others can't? We really don't know. But while we can't really strengthen our chin per se, we can strengthen the neck muscles to allow us to absorb hard blows.

Use this guide to working the muscles you too often ignore and you’ll have the complete playbook for building a winning body. Here are three key components to your best leg day ever.

Kickboxing is a martial art based on kicking and punching that has been divided into two distinct styles: Japanese and American. Although the term "kickboxing" usually refers to Japanese or American styles, the word also encapsulates all stand-up combat sports that allow both punching and kicking, such as Muay Thai.

Boxers and bodybuilders embody many of the traits of elite athleticism including endurance, strength and coordination. However, the two sports also differ in many ways. Boxers and bodybuilders train for different performance goals, which means specialized workouts and specific measurements of progress.

You will lose weight during your first boxing class although your weight loss might be imperceptible. How much weight you lose during boxing classes depends on how active you are during the class, the kind of boxing you’re involved in, your exercise heart rate and your weight.

Defensive back is one of the most demanding positions in the game of football. To be good requires athleticism at the highest level. Not only do you have to be good physically but you also need to be cerebral in reading the offense, anticipate movements and react quickly.

While boxing gloves are the most important piece of boxing equipment, the shoes that you choose will have an influence on your speed and agility in the ring. Boxing shoes are a must if you plan on boxing on a regular basis, since they are more supportive than regular running shoes.

Running a 5k takes preparation, strength and energy, and your prerace eating plan affects all three. In the weeks leading up to the race and immediately before the event, a correctly balanced prerace diet will lead you to your best performance.

You just ran 13.1 miles — what are you going to do next? The answer: recover. The recovery period after a half marathon is just as important as the preparation, and the week following the big race can be extremely important to your overall health.

Running speed is determined by two basic variables: stride length and frequency. Developing a longer running stride will increase speed in both sprints and long-distance runs. Stride length is determined by the force applied to propel the body forward.

Running and cycling both burn a lot of calories. How much weight you'll lose depends on several factors, including your diet.