Carbohydrates are a type of food that provide a source of energy for the body. There are two types of carbohydrates:

Simple carbohydrates : These are found in fruits and are easily digested by the body. They are also often found in processed foods and anything with refined sugar added.

Complex carbohydrates : These are found in nearly all plant-based foods, and usually take longer for the body to digest. They are most commonly found in bread, pasta, rice, and vegetables.

If a person is exercising for just a short period of time, say thirty minutes of walking or jogging, the body will release glycogen to be used for energy. If you're exercising for an extended period of time, or doing more strenuous exercise, the body will turn to it's fat reserve for energy.

he body needs a certain amount of carbohydrates to function properly, and an insufficient supply can cause such things as fatigue, muscle cramps, and poor mental function. A low-carb diet might seem healthy, but if taken to the extreme, can be very dangerous to a person's overall well-being. It's important to remember that "low-carb" doesn't mean "no-carb." Be sure to eat moderate amounts of carbohydrates to keep your body fueled properly. As with al diets, it's a good idea to check with a doctor before you start, and do as much research as possible before committing your body to any diet or exercise regimen.