That jiggly stuff under your arms that keeps waving goodbye after you've stopped? It's history with this triceps-firming program.

The back of the arms is a common trouble spot for females. Although the triceps (the proper anatomical name for the waggly part) make up about two-thirds of the upper arms, they are somewhat underrepresented in the tasks of daily life.

Compared to your triceps, your biceps are something of a stage hog. Every time you bend your elbows, your biceps are pressed into service. They work particularly hard when you pick up something that's heavy ‑- groceries, files, kids, bags of pet food. Your triceps straighten your arm, and you use them when you push away something. But how often do you give them a workout by pushing something heavy? Although stuck doors and loaded shopping carts give your triceps something to do, unless you make your living moving pianos, chances are they could use a little extra attention.

Fortunately, it's not hard to isolate your triceps. You can tone them with a regular routine of three exercises done twice a week. You'll need some stretchy bands to complete this workout, but don't let that dissuade you ‑- bands are cheap. They're often sold on six-yard rolls that cost about $15 each ‑- you can cut off as much as you need. Bands also come with different levels of elasticity (stiffer ones offer more resistance). They are incredibly versatile (use them to work your back, chest, shoulders and legs), and they're a breeze to pack. You can buy them at most sporting goods stores or online. One popular brand is Thera-Band.