Ever hit the, er, wrong balls with your baseball bat? Do an Olympic-worthy split dismount onto the crossbar of your mountain bike? Apparently, you’re not alone.

According to a new study, published in The Journal of Urology, more than a third of the people treated for “genitourinary” injuries (that is: anything that involves the genitals, urinary tract, and kidneys) in emergency rooms during the years 2002-2008 were young men between the ages of 18-28.

What’s more: those guys tended to hurt themselves most often in sporting accidents. Oof. So let’s take a look at the most common causes, in order, shall we?

  • Bicycles
  • Razors, scissors and clippers
  • Zipper injuries
  • Bathroom falls and mishaps
  • Basketball equipment
  • Baseball and softball equipment
  • Skiing and snowboarding equipment

The good news is that 90 percent of you were treated and released, but if you want to keep your ER record clear, researchers have a few simple recommendations. Oops-proof your sporting goods (might we recommend padding on your bike rail?), invest in a slip-free bath mat…and please, please learn some safe techniques for grooming your hair down there. (Don’t worry. We’ve got you covered.)