On a typical drive, how hard do you swing? It's often a subjective assessment, but it’s common for golfers to swing about 85 to 95 percent of their maximum effort.

But is that ideal? Would you shoot lower scores if you swung all out, using 100 percent of your energy on every drive? Or conversely, would you be better off if you made a fairway-finder swing with 70 percent effort?

As part of our MythBusters series, we tested whether swinging all out comes at too great a cost. Here’s what we found.