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"Fitness apps are certainly the rage these days, providing high-tech feedback on your workout routine. But if you'd rather not always have your smartphone by your side at the gym, a new workout shirt gives you visual feedback \u2014 colorfully.\nLike other athletic apparel, the Radiate shirt keeps you dry with moisture-wicking features. But where it stands apart is the shirt's ability to change color according to your body heat. Starting with MRI technology, West Chester, Pa.-based Radiate Athletics integrated the body's blood flow and metabolism with advanced thermal imaging to create this responsive shirt.\nSome might think this sort of fitness apparel is a gimmick, but you can literally visualize your workout, since areas of the shirt light up as your muscles reach their optimal performance levels. Check out the video above to see how this works.\n\nTo lower production costs, Radiate Athletics is trying to raise $30,000 on Kickstarter in the next 33 days. So far, backers have pledged more than $12,000, as of Thursday afternoon.\n\"Heat change is the metabolic response to exercise and so you would get to know your own response by the color change,\" Dr. Sheri Melton, professor of exercise physiology at West Chester University, said in the Kickstarter video.\nSEE ALSO: Jeans Change Color With Your Body Temperature\nIf you're looking for feedback during your workout, this could be a fun addition to your gym wardrobe. A limited number of backers on Kickstarter can get short-sleeve or long-sleeve versions of the Radiate shirt early.\nBut note that, whether you like it or not, you might turn some heads at the gym when your shirt keeps changing colors mid-workout.\nImage and thumbnail courtesy of Radiate Athletics\n"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2013/03/14/workout-shirt/>