No matter what season it is, you can always count on a visit from the ‘old wives.’ So here’s the real deal behind some popular summer health myths. These come from Dr. Melissa Stoppler, who’s the editor for ‘MedicineNet.com’.

  • You need to wait half an hour after you eat before swimming. Not true! Dr. Stoppler says there’s no documented evidence that anyone has ever suffered a severe muscle cramp and drowned because of swimming too soon after eating. So that potato salad might feel like it’s weighing you down, but you won’t actually sink to the bottom of the pool. But if you’re still worried, have a sprig of parsley after your   meal – that’ll speed up your digestive juices and break up the food in your stomach faster.

  • Going to a tanning salon gives you a nice base tan, so you won’t burn in the sun. This is definitely FALSE. Baking in a tanning salon won’t protect you from the sun’s harmful rays. In fact, tanning beds can be more dangerous than the sun itself! Why? Because the lights contain mostly UVA rays, which penetrate the skin more deeply, and do more damage than the sun’s UVB rays. Basically, skip the tanning bed and cover up with SPF 30 when you’re outdoors.

  • If you get stung by a jellyfish, using human bodily fluid on the sting will stop the pain. Nope. That’s the word from the experts at The Jellyfish Sting Newsletter. They say human bodily fluid does nothing to relieve the pain. So how do you treat a jellyfish sting? Remove any tentacles stuck to the skin and rub on an ointment containing menthol. You can also take Advil or Tylenol to relieve the pain. And here’s another tip: stay away from beached jellyfish; they may look like jiggly fun, but they can still sting.