The biceps are one of the most viewed muscle groups on the body and are therefore often utilized as a symbol of strength. Located on the front of the upper arm, the two-headed muscle group -- consisting of a long head and a short head -- serves to flex your elbow, such as in a pulling motion.

A triceps pushdown, also called a pulldown, is a resistance-training exercise that involves pushing a bar down in front of you. The bar is connected to a cable that wraps around an overhead pulley before attaching to a weight stack. When you push the bar down, the weights rise to provide opposition.

Thumb injuries can take on many forms -- including dislocation, sprains or fractures. Depending on the severity of your injury, it may take weeks or months for your thumb to heal.

Towel pullups are more difficult than standard pullups because you have to grip a towel to do the exercise. This works your forearm muscles, which are your gripping muscles, making them stronger and thicker. Use different types of towels to make it more or less difficult to hold on during a pullup.

For some, bicep size is an important part of looking and feeling fit. There are lots of things you can do to make your biceps bigger, but the most important factor is exercising with the right workouts, intensity and frequency.

A pushup is one of the most effective chest exercises and enables you to work the chest in several ways. You train the large pectoral muscles in your chest and the triceps at the back of your arm differently depending on your pushup stance.

Flabby arms are unsightly and can be a real challenge to your personal confidence and self-image. It might seem logical that working out your arms — such as with punches to a heavy bag — would reduce arm fat. However, the truth is more complex and involves muscle toning and development.

Improving hand strength is often the focus of your occupational therapy. By using Theraputty, dumbbells or functional activities, your OT can teach you a variety of occupational hand exercises to increase your hand grip strength.

Curls, which is the shortened term for bicep curls, are a common weight training exercise used to develop muscles in the upper limbs. Curling can be completed with dumbbells, a barbell, on a pulley unit or on a machine. To perform the curl, hold the weights down by your side with your palms facing forward.

The triceps, like any other muscle group, should be trained at least twice per week on nonconsecutive days.

When asked to flex a muscle, you'll most likely flex your biceps by bending your elbow. Although the biceps muscle is involved with flexion of the elbow, contrary to popular belief, it's not always the most active elbow flexor.

There are more than 14 different flexor and extensor muscles in your forearms. These muscles are responsible for moving your wrists toward and away from your body. There are also two muscles responsible for elbow flexion in your forearm.