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Exercise can make or break a relationship, according to the Wall Street Journal. For every couple who meets sharing a lap lane and lives happily ever after, another duo struggles to stay together -- and too much time on the treadmill is to blame.
What happens when one spouse works out obsessively, leaving the other to care for children and chores? "The effect of extreme exercise on divorce rates isn't clear," writes author Kevin Helliker, although he does conclude that "the surest way for a marriage to accommodate an intense exercise regimen is for both spouses to engage in it."