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The Workout That Can Lower Your Breast-Cancer Risk

Every month we remind you of
the reasons you should exercise
regularly. Need two more? Your
breasts. New research shows us
that exercising often and at a
higher intensity (RPE 6 or
greater*) has a protective effect
against breast cancer-findings
that dovetail with the American
Cancer Society's latest recommendation
of 45 to 60 minutes of
physical activity five days a week.

To make it easy for you, we
asked Tom Holland, a trainer and
an exercise physiologist in Darien,
Connecticut, to design a routine
using intervals to keep the intensity
high but also still manageable
(so you don't keel over). "You'll
work really hard for a short period
of time then recover at a more
moderate level," he says. "Cancer
prevention aside, this type of training
burns tons of calories,
improves your endurance, and-
because you keep switching up
the intensity-stops you from getting