Proper positioning on a bicycle can eliminate almost all of the pain associated with riding. While longer rides will always take some toll on your muscles, riding a bike should not be a painful activity.

Punching faster means your strikes land earlier, more often and with greater force. It should come as no surprise, then, that many fighters make punching faster a priority in their training.

Two entities that compile injury statistics for the roughly 380,000 male and female college athletes. The NCAA and the National Athletic Trainers' Association have an injury surveillance system that collects injury reports submitted by trainers. It has been in operation since 1988.

The left arm plays an important role in keeping the golf club in the proper position during the back swing and down through impact.

Soccer players cover five miles or more during a game, in motions that consist of sprints, jogs, strolls, backpedals, shuffles and walking, as well as forward, backward and laterally, according to video analysis of elite players in the United Kingdom.

The winner in a boxing match is often the competitor with the fastest punching speed. How quickly you can deliver a punch increases your chances of landing it and improves the force behind it. While punching speed is partly dependent on genetics, anyone can make significant improvements with consistent training.

Jumping in the pool can help you stay in shape and cool off on warm days. Swimming is also a non-weight-bearing exercise that utilizes most of your muscles, making it effective for both cardio and muscular endurance.

Boxing means you're most likely going to get punched in the face. In most cases, it means getting punched in the face a lot. This unavoidably means swelling on your face. Although this is often an inconvenient side of the sport that's not serious, it can also be a sign of serious injury.

Skiing demands a series of complex interactions between your upper- and lower-body muscles and your central nervous system. Your muscle groups work in concert to perform the primary skiing movements designated by the Professional Ski Instructor's Association.

Increasing your sprinting speed begins with knowing how to sprint properly. The proper stance, takeoff and form help to propel your body toward the finish line without wasting energy. You might want to work with a running coach, or a qualified sprinter, to help perfect your running form.

Not everybody learns to ride a bicycle on training wheels. And if you are someone who didn't, you might be overwhelmed when looking into making a new bike purchase. If you are a beginner adult looking to purchase a bicycle, you'll want to make sure you end up with the right size bike and a type that fits your needs.

Swimming is one of the safest exercises you can do during pregnancy, according to the American Pregnancy Association. Swimming in a pool with bleach and chlorine can be safe and beneficial during pregnancy. As long as you are not limited by certain health issues, both you and your growing baby can benefit.