A significant Arctic blast expected to hit the U.S. starting later this week will bring the coldest air of the season, dangerous wind, heavy snow - and the risk of heart issues - to those living in communities from the Great Plains to the Great Lakes. The exertion of shoveling snow in extreme cold can be deadly.

The American Heart Association teaches lifesaving skill of Hands-Only CPR to members of Texas Christian University men’s and women’s basketball teams to help improve the chain of survival.