Researchers say 4 cups of coffee per day could be good for the heart

You know the saying an apple a day keeps the doctor away, but what about four cups of coffee?

Researchers in Germany say they've found that the equivalent of four espresso shots a day could be good for your heart.

RELATED: California judge says coffee must have cancer warnings

According to the research, that amount of caffeine sets into motion a process that helps protect heart cells from damage.

They also found that coffee helps the heart to recover after a heart attack.

Click here to read the full results of the study.