Arm pit flab is a common problem for people trying to tighten up and get in shape — regardless of their age or gender. Women, however, seem most eager to get rid of the jiggly bit of flab that hangs out of their bras and makes them self-conscious in strappy tank tops.

Push-ups alone are unlikely to increase your arm size. Combining push-ups and additional upper-body exercises, though, can get you the arm definition you seek.

Armpit rolls are unsightly rolls of fat that can be seen through fitted shirts or -- even worse -- when they spill out of your tank top. Eliminating fat under your arms isn't impossible, but you do have to change your diet and exercise habits.

Pullups tend to be one of the more challenging exercises. They use your body weight against you and engage multiple muscle groups at once to move your body against gravity.

Although those rolls of baby fat are adorable and squeezable, even young babies need to build muscle.

Slipping into that sleeveless party dress or tank top can make any woman nervous about exposing flabby arms. As you get older, it is natural to lose some muscle mass and tone in the arms, especially the back of your arms or the triceps.

While a broken finger may sound like a minor injury, it can actually be quite serious. The bones in your fingers allow you to perform many everyday tasks and hold various objects, and breaking them can cause great discomfort.

Pushups are an effective upper-body workout that strengthens your chest, shoulders and arms, while also tightening your core. Performing pushups will increase muscle size but won't specifically reduce fat on the arms. To lose fat anywhere on the body, you need to expend more calories than you consume.

The biceps and triceps are opposing muscle groups on the front and back of your upper arm, respectively, and should be balanced for optimal performance and to minimize injuries. The biceps muscle group consists of two heads and the triceps have three. Their purpose is to flex and extend the elbow.

A sledgehammer is often used to break thick items, such as concrete, but it can also be used as a strength-training tool. Fitness classes are incorporating sledgehammers and tractor tires into a workout designed to improve strength and power while increasing muscle mass.

Big arm muscles can make a huge difference to your physique. Your arms are an important muscle group if you compete in bodybuilding, and even if you don't, big arms can still turn heads in the gym and help you become stronger.

Adding muscle mass at any point in your life is exceptionally difficult. It typically involves hours of dedication in and out of the gym, every day. If you're a growing teenager with no access to gym equipment, the difficulty level increases exponentially. Don't fret, there's still hope.