Hundreds upon hundreds of crunches, leg lifts, and twists, yet a six-pack is nowhere to be found. Sound familiar? If so, it's time you got off the floor and on your feet again, because the only way you're going to get those abs popping is to reduce your body fat.

Generally speaking, the men and women you see gracing the covers of fitness magazines have a body fat percentage of less than ten percent. And, as you can tell by looking at them, they definitely have ab muscles. The thing is, so do you; the only difference is, if you can't see yours, it's because they're hidden behind a layer of subcutaneous fat.

To shed this fatty layer and expose your six-pack, stick to a sensible diet (no simple sugars, keep unhealthy fats to a minimum, eat plenty of protein, and keep caloric consumption under control) and follow a cardio program that works for you. For some people, this means utilizing a high-intensity interval training workout, which has been shown in numerous studies to blast fat at a rapid rate. Other people prefer longer durations of moderate-intensity cardio work, which is effective in its own right. One suggestion would be to alter cardio programs every four to six weeks, so as to avoid reaching a fitness plateau. Another great way to help reach your goals faster is to incorporate a resistance training program, ideally in the form of a weightlifting circuit routine. Follow this approach and those ab muscles of yours will come out from hiding in no time.