Five new health facts you need to know this month

How’s this for a good-news quickie: Montreal researchers say sex qualifies as “significant” exercise. And in fact we burn just as many calories doing it as we do playing doubles tennis or walking uphill for 25 minutes. The study found sex burns 3.1 calories a minute for women, on average, while a tougher workout like running on a treadmill burns 7.1.

Calories aside, 98 percent of participants also said they found sex much more fun than running (duh!).

Bottom line: You can count sexy time toward your grand total for the recommended 150 minutes of physical activity each week.