Besides being used as a ball to serve on tennis courts and throw for your dog, tennis balls can be used to exercise and stretch the back and core muscles in a unique and helpful way. There are a wide variety of exercises that can be learned and used surrounding the sole use of a tennis ball.

If you've ever been camping in the middle of summer, you know how hard it is to sleep when you're hot and sweaty. Even a 10 degree drop in temperature can make a big difference in your comfort level.

Swamp coolers are an easy solution. Most of them work by blowing air through water-saturated pads. As the water evaporates, it cools the surrounding air. These units have simple designs, and they're cheap and easy to maintain.

There are many different types of performance-enhancing drugs, including synthetic erythropoeitin (EPO), anabolic steroids and drugs used in blood doping. Although performance-enhancing drugs are commonly associated with athletes, they are often used in non-athletic situations for a variety of reasons.

Strengthen the muscles around your knee. It's one of the most important things you can do to avoid running injuries. A combination of strength exercises and stretches can help make your knees less prone to injury. If you find yourself with persistent and severe knee pain, it's important to rest and ice your knee while you allow it to recover or seek professional guidance on what the problem may be.

Food is the biggest concern when planning for a week-long backpacking trip. Weight is the next biggest concern. That's where freeze dried food comes in. It's a lightweight and nutritious option to fresh food.

Decide what you want to eat for the week. There are plenty of choices for every meal and dessert, including beef stew, bacon and eggs and cobbler.

Human arms are composed of three major muscle groups: biceps brachii, triceps brachii and forearm. The issue of flabby arms is typically in reference to the upper arm, where the biceps and triceps muscles reside. Exercises that work the triceps muscles will help you reduce the hanging fat you see when you raise your arm to wave. Exercises for the biceps will also help reduce the appearance of arm fat.

Removing excess fat within the body can be done while training the hip region of the body as there are exercises that involve cardiovascular movements and light weights. Women mainly carry their weight within the hip, thigh and buttocks due to hormonal influences, according to Virtua Health. To reduce fat cells in these areas, cardiovascular exercises must be performed along with light weight training to develop strong and lean muscles

Outriggers are equipment on boats that hold fishing rods, making it easier to fish multiple lines and bait spread around the boat. Outriggers are commonly made of aluminum, fiberglass and carbon fiber. Regardless of the material, all have the same configuration: They are long tapered poles with a pulley at the top and a rope running along the length. Tied to the rope is a clip called an outrigger pin, which is usually round or oval and works like a clothes pin. The base will have a bend in it to get the fishing line out to the side of the boat.

Bar end shifters are a favorite of touring cyclists and cyclocross racers due to the shifter's difficult-to-break nature and the ease with which they are adjusted. However, setting up a bar end shifter setup can prove difficult on some bicycles. Take the time to get your bar end shifters installed and adjusted properly to enjoy their benefits fully and without worry.