>> yes, believe it or not, it could be what's on your bed to blame. but new technology in bedding could be just what the sandman ordered. here now is abc's contributor tina trinh. >> reporter: what does a good workout have to do with a good night's sleep? it's all about gear. the same technology keeping us cool on the court is in between the sheets. it's called bed gear and it's taking sports wear out of the gym and into the bedroom. all that heat and sweat that interrupts your workout turns out it can interrupt a good night's sleep, too. >> so much heat comes off the back of your neck at night. we want to get that heat and moisture away from your body. >> reporter: those fancy cotton sheets don't always help. >> although it's soft and natural, it also takes on heat and moisture and traps it next to our skin. >> reporter: just like the fabrics in workout apparel can keep bodies cool at play, the same technology works at keeping bodies cool at rest. >> what we found is that we needed to get a technical fabric