Dorothy Cox, 65, of Worcester walks five times around the trail in Lake Park on a toasty Thursday.

How to stay safe exercising outdoors on hot summer days

WORCESTER Worcester’s Dorothy Cox was taking her regular five-mile walk at Quinsigamond State Park last week when the temperature was in the mid-80s, with some humidity and a higher heat index. She’s not a fan of what the weather does. When it’s above 90 degrees, there’s no way, Cox said, to mix effort and the …

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