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"EXERCISE & BREAST CANCER"
We've known that physical activity can reduce breast cancer risk,
and appears to work especially well at preventing estrogen-receptor negative tumors, the hardest ones to treat.
But only last year did we figure how much exercise was needed.
We've known that light exercise doesn't work, like a leisurely stroll.
It appears useless for preventing breast cancer.
And we've known that fewer than 10 minutes a day of even good exercise doesn't work either.
How many minutes of moderately intense exercise — hiking, biking, swimming, aerobics, or even just fast walking —
does one need, on average, every day to significantly decrease breast cancer risk?
Less than 10 minutes doesn't work, but how about a full 10? 15? 30? 45?
Or a full hour a day?
Well, It's not 10. It's not 45. And it's not 15.
We need an hour of exercise every day.
Darwin was right: it's survival of the fittest, so let's get fit!