We are bombarded by advertisements for products that we never thought we ever needed.

Consumer Reports said infomercials are designed to pump up the dopamine levels in your brain, and that can stimulate your impulse to buy.

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"That's why infomercials have claims and testimonials flying at you," said Consumer Reports' Kim Kleman. "And they say, 'Order in three minutes,' because your dopamine levels drop in about five to six minutes."

Consumer Reports routinely tests infomercial products, like the Ab Circle Pro.

The machine promises it is "the fastest, easiest way to have flat washboard abs," Strickler reported.

Panelists gave the $200 device a try, but said the workout is about the same as going for a brisk three-minute walk, Strickler reported.

"Following the Ab Circle Pro's strict diet plan will definitely help you lose weight," said Consumer Reports' Alex Willen. "But the three-minute exercise routine, not so much."

The Snuggie, a blanket with sleeves, comes in all colors and retails for about $14.99, Strickler reported.

"We tested the Snuggie by washing it 10 times, looking for shrinkage, pilling, and also lint," said Consumer Reports' Pat Slaven. "Pills are these fuzzy little balls, and between them is bare fabric."

After 10 washes, the Snuggie did not hold up well, and had lots of pill, Strickler reported.

Plus, experts said its one-size-fits-all claim hardly stands up.

Consumer Reports found a few infomercial products that performed well in tests, including the Magic Jack, a device that lets you make and receive calls through the Internet.

So the next time you see an infomercial product you really want to buy, Consumer Reports suggests you resist the urge to buy for at least ten minutes.

That will give your dopamine levels a chance to return to normal, and you can decide whether you really need that product.

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