Knuckle, or fist, push-ups are identical to the traditional push-up but with one slight variation: your upper body is supported on your knuckles rather than on your palms. Knuckle push-ups are commonly performed by martial artists who want to strengthen their knuckles and wrists, thereby improving punching efficiency.

Weight gain in the face can cause a loss of definition in the jaw line and chin. Weak muscles around the neck, jawline and face also cause the skin to droop, creating a sagging appearance instead of a right angle along the jawline, according to the April 2005 edition of Science Daily.

Grip strength is an important component of athletics as well as most everyday tasks. According to Bison Strength, grip strength can be divided into several types. Crushing strength would be used to squeeze the juice from a lemon. Pinching strength would be used to carry a wooden plank with one hand.

The obliques are the diagonal muscles on the sides of the ribcage by the stomach. If your obliques are covered by fat, you have what is referred to as "love handles." These overhangs of fat on the sides are often the butt of many jokes, but when you have them, it's no laughing matter.

When the nerve that runs from the arm to the fingers becomes compressed, pain and swelling can occur. Called carpal tunnel syndrome, the condition is a common problem for people working on computers for long periods.

Wrist drop is caused by irritation or entrapment of your radial nerve, which runs down your arm and into your hand, states the MDGuidelines website. The nerve often becomes irritated due to a repetitive activities such as typing and leaning your elbows on your desk.

A broken wrist is a medical condition that occurs when at least one of the bones within the wrist sustains severe damage or injury, causing the bone to fracture. Common causes of a broken wrist include sport or motor vehicle injuries or bone disease, such as osteoporosis, according to MayoClinic.com.

Tennis elbow, or lateral epicondylitis, is a painful condition that makes even the simplest tasks, such as picking up a gallon of milk or shaking hands, difficult. Even though it's called tennis elbow, you don't have to play tennis to get this injury.

Some people notice weight gain in their face before they notice it anywhere else. Unfortunately, you cannot get rid of big fat cheeks without losing weight throughout the body, unless you undergo a procedure such as liposuction.

Hyperextension is a common injury that refers to an over-stretching of the muscles and tendons in a joint. Hyperextended fingers can happen in almost any sport, and can result in a sprain, fracture or bone chip.

Keyboard finger exercises are designed to help you improve your typing and writing skills. While many keyboard finger exercises are designed to strengthen your fingers and improve their stamina, others focus on your typing accuracy and form.

Incline push-ups are a strength training exercise that target the muscles of the chest, fronts of the shoulders and the triceps. Perform them like a regular push-up, but place your hands on an elevated surface, rather than on the floor.