What Happens to Your Brain When You Stop Exercising?

A new study shows that cerebral blood flow within the left and right hippocampus significantly decreases after just 10 days of without exercise.

Runners make their way through a Brooklyn neighborhood during the New York City Marathon November 6, 2005 in New York City. (Photo by Spencer Platt/Getty Images)

One persistent question has echoed for decades in regards to exercise: how much? Current government guidelines suggest either 150 minutes of moderate aerobic intensity or 75 minutes of high aerobic intensity every week. It is also suggested that these minutes are spread out through the week. One two-and-a-half hour jog on Sunday is not optimal if you’re not getting your heart rate up at all over the following six days.

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