By now we've heard it all: Lose your belly in as little as one week, Tone and shape your body in only 5 minutes per day, Drop three dress sizes and lose inches from your waist by just thinking positively. Thanks to infomercials, becoming fit seems to be something we can practically do in our sleep. Actually, some products make that very claim.

However, as crazy as it may seem, there actually is a product that may help you lose weight while you sleep. A recent study from the University of Wisconsin revealed that consuming 4g per day of conjugated linoleic acid (better known as the supplement CLA) for six months can cause you to burn more fat and less protein while you sleep.

Aside from the fact that these findings are based on an actual university research study (as opposed to most infomercial products, which are based on God knows what), the margin of effect created by CLA supplementation was admittedly small -- making them much more likely to be legitimate. Mild caloric restriction and/or daily exercise produces a much more significant fat burning effect than does popping some CLA, though supplementation makes for a healthy addition to this program.