researchers found swimming, raquet sports and aerobics were the best for putting off any cause for heart disease or strokes. >>> a new report finds lack of costs the economy up to $411 billion a year. researchers say lower productivity and higher risk of deeing from sleep deprivation have a big impact on the economy. >>> new video out of central mexico where a volcanic eruption was caught on camera. the cloud rose over 1600 feet over the crater. ash fell in nearby nearby towns and people have about getting too close to the volcanic activity due to the toxic gases. >>> let's turn to ashton altieri now. good morning. it is cold outside. >> it is cold outside. we're in the teens and 20s depending where you're at. the good news about today is there's going to be much less wind compared to yesterday. we're also going to get to enjoy more sunshine than we got to enjoy yesterday. sunrise. sunset keeps getting earlier and earlier. we have about three weeks of there and when we officially hit winter, the duration of daylight starts to get a little bit longer once again. dry conditions across the

researchers found swimming, raquet sports and aerobics were putting off death from any cause and heart disease or stroke. >>> here's why you should get more sleep. a new report finds lack of sleep among workers in the u.s. costs the economy up to $411 billion a year. researchers say lower productivity and higher risk of death from sleep deprivation has a big impact on the economy. >>> 5:44. weather and traffic every 10 minutes on the 4's here on britt. it's cold as we get this wednesday started. 23 degrees. the sun will be up at 7:01. the duration of daylight keeps getting shorter and shorter. winter officially starts the 21st of december. after that the duration of daylight will start getting longer and longer again. here in colorado the official seasons don't matter. we went straight from summer into winter time. little bit of light snow possible today over the northern mountains, mainly north zero in the mountains. along the front range teens and 20s to get the day started. compare our current temperatures to 24 hours ago, it's about 15 degrees colder this morning than yesterday at