11. Play with fireworks.
There are few things better than watching magical fireworks on Independence Day. But if you're trying to light it up yourself, be sure to cover these firework safety tips first —before you "make 'em go 'oh, oh, oh!'"
More: The Science Behind Firework Colors
12. Don't wear your bike helmet
If you ride a bike, you need a helmet. That means you too, adults. It can't prevent every injury that can result from a biking accident, but it might just save your life, too.
More: How to Choose a Bike Helmet for Your Child
13. Star in a real-life version of Jaws
There's a great white shark named Mary Lee cruising around the East Coast (and a scary number of attacks in North Carolina already this summer). Odds are super low she (or any of her other shark buds) will join you for a swim, but, umm, we'd just rather be prepared, ok?
More: 10 Things Everyone Should Know About Sharks
14. Stop drinking water
Heat illnesses, like heat exhaustion and heat stroke, can be killer during the summer. Stay ahead of dehydration by drinking plenty of water and sports drinks (for electrolytes!) — especially when exercising.
More: How Much Water Should Athletes Drink?
15. Suffer from brain freeze
Slow down on that double scoop and those firecracker popsicles, guys. Brain freeze is no joke.
More: 10 Favorite Frozen Summer Treat Recipes