For the first time in more than a decade, a leading pediatricians group has put out new guidance about recess, saying it’s crucial for good health and good grades and should be part of the school day for students of all ages.

FILE - In this Wednesday, Aug. 22, 2007, file photo, Robert Murray, chief executive of Murray Energy Corp., speaks during an interview with an Associated Press reporter in his office at the Crandall Canyon Mine, in Huntington, Utah. Michael Shaheen, an attorney who had recently represented Murray, 80, told The Intelligencer/Wheeling News-Register that he died Sunday morning in St. Clairsville. Public reports recently stated Murray had applied for black lung benefits with the U.S. Department of Labor. Murray was the founder, president and CEO of the company's predecessor, Murray Energy. Murray Energy was launched in 1988.