DAYTON, Ohio (The New York Times News Service) -- When colder weather hits, many people give up their regular exercise routines. Shorter days, less sunshine and uncomfortable temperatures can combine to make it more difficult to stay on track.

TORONTO (Canadian Press) -- A study of helmets used by children for winter activities offers some new data on the various types of head protection that would suit tobogganers.

NEW YORK (AP) -- A routine news story took a strange turn when an ABC "Nightline" anchor had a full body scan that turned up a possible warning sign.

(Chicago Tribune) -- "Maybe you love to eat but hate to exercise," Jim Karas proposes.

NEW YORK, N.Y. (Canadian Press) -- It's dramatic news when a marathon runner collapses with no pulse. Now a big study finds such calamities are rare and usually due to a pre-existing heart problem.

TORONTO (Canadian Press) -- Physical activity during both work and leisure time appears to significantly lower the risk of heart attack, whether a person lives in Canada or Colombia, in Poland or Pakistan, research suggests.

(USA TODAY) -- When Carrie Cooper realized she could still go rock-climbing while pregnant, even she was surprised.