Pack smart. Include lightweight items that will protect you from the elements and are easy to transport. Bring a tent, blankets and a sleeping bag for comfortable sleeping. Have waterproof matches, a knife, compass, map, first aid kit and cellular phone on you at all times for safety and security purposes. Pack a hat, sunglasses and sunblock to protect you from piercing daylight and a watch so you can always keep track of time.
Pack two pairs of boots and plenty of socks. Your feet will work tirelessly through the terrain of Yosemite, so have durable and cushioned boots to protect your bones and joints. Crossing puddles and streams is almost certain, so carrying multiple pairs of socks is essential to keep your feet dry and less susceptible to infection. Additionally, snow on along Glacier Point trails, for example, is almost a guarantee at elevations of 6,000 feet or above. Pack a supportive pair of snow boots to provide additional protection along high elevation treks.
Store all of your food in airtight and lockable containers. Yosemite is home to countless grizzly bears, and keeping your food protected is critical to keeping bears off of your campsite and trail. Choose an airtight container that does not allow odor to seep, and keep food packaged and containers locked and shut at all times. Open and close containers -- even beverages and water bottles -- only when you need to eat or drink.
Protect your arms, legs and face from natural elements. Mosquitoes are a brutal force in Yosemite and can wreak havoc on exposed skin. Carry mosquito and insect repellent on you at all times. Spray repellent liberally over exposed skin several times a day. Rub a thick coating of lip balm over your lips a few times a day as well. Direct sunlight can bake your lips, and the pressure from heavy breathing will take its toll on your lips as well. The water in the streams of Yosemite is also filled with hard, natural minerals that can damage lips. Lip balm seals and protects your lips from harmful exposure. Trails along Yosemite Valley and Wawona are surrounded by water and humidity in the summer -- prime territory for mosquitos.
