Prep. Get in shape before you head out on your hike. Try walking around your neighborhood with your pack loaded with five pounds more gear than you'll actually carry on your hike. If that goes well, plan a short hike to test your abilities on the trail.
Buddies. Take a friend and an adult along on your hike. That way you can look out for each other and you'll have people to talk to! Also, be sure to let someone who's not going know where you'll be hiking and what time you'll be back.
H2O. Carry lots of water even if you are only planning a short hike. For warm-weather hikes, bring six to eight quarts of water per day. In the cold weather or higher elevations, you can be safe with half that amount. Whenever you are near water, make sure you wet yourself down. Dampen a bandana and wipe your face, neck, and arms or wrap it around your head while you hike. Want to read more about keeping your cool?
Blisters and more. To prevent blisters, try spraying your feet with an anti-perspirant before heading out. Bring extra pairs of socks that you can change into if your feet get wet or sweaty — if they aren't made of cotton, they'll keep your feet drier. Once you're on the trail, stop as soon as you feel a "hot spot" on your feet and apply special type of bandage called "moleskin" to the sore area. Also, try using a hiking stick to keep some pressure off of your legs and knees.
Buzz. Don't get bugged by bugs. Protect yourself from bites and stings by using a bug repellant that includes DEET. Repellents that contain DEET are the most effective, but make sure you rub them on according to the directions. A good rule of thumb from the experts is that kids should use repellents with less than 10% DEET. Get your parents to help you put it on your face so you don't get it in your mouth or eyes. And wash your hands after you apply it. Remember that stuff that smells good to you smells good to bugs too, so don't use scented shampoos or lotions before hiking.
Weather watcher. When it's hot, pick trails that are shaded and run near streams. If you need to hike uphill in the sun, first soak yourself down to stay cool. You can also try wearing a wet bandana around your head or neck. Also, try to stay out of cotton clothes. Keep yourself out of bad weather by checking forecasts before you hike and watching the skies once you're out on the trail. During lightening storms, head downhill and away from the direction of the storm, and then squat down and keep your head low.
Keep it yummy. To stay healthy on your hike, you'll need to know how to keep your food and water safe. Remember the four C's: contain, clean, cook, and chill.