Try This 'Summer Slim Down' (VIDEO)

The official beginning of summer means one terrifying thing: It's bathing suit season. It can be enough to strike fear into the heart of even the most assured woman. The good news is that the secret to strutting down the beach in a bikini may be as simple as a workout that builds confidence as much as it builds muscle.

With the help of Marissa Stephenson, SELF Magazine's Fitness Editor, you'll feel pool-ready in no time. Stephenson's simple workout only requires a mat and can be done from the comfort of your living room. The workout targets the abs, butt and arms -- areas that can help with overall strength and fitness, no matter what time of year it is.

Since these moves are simple and fun, challenge yourself to do them for a happier, healthier summer.