Fad Diets > Dangerous Dieting

Think of aerobic activity as being long in duration yet low in intensity. Aerobic activities include: walking, biking, jogging, swimming, aerobic classes and cross-country skiing. Anaerobic activity is short in duration and high in intensity. Anaerobic activities include: racquetball, downhill skiing, weight lifting, sprinting, softball, soccer and football.

Unlike androstenedione, scientific research indicates that creatine can boost short term bursts of power. Most of the research points to improvements in short term power activities like improving maximum weight bench press or increasing speed during cycling sprints of very short duration.

If your body uses up its glycogen supply and you keep exercising, your body will burn fat for energy, decreasing exercise intensity. What you eat several days before endurance activities affects performance.

The grip on your tennis racquet is too small, or there's too much tension on the strings. Or you're gripping a golf club or baseball bat incorrectly. Another possibility: You're bending your wrist when performing biceps curls and upright rows.What's going on is the tendons in your elbow have been stretched beyond their capacity and are starting to pull away from your elbow.

But eating too much fat is associated with heart disease, some cancers and other major problems, and probably means you don't get enough carbohydrates. How your body uses fat for energy depends upon the intensity and duration of exercise: When you rest or exercise at low to moderate intensity, fat is the primary fuel source.

See your doctor for individualized nutrition advice. Water is the most important factor in sports nutrition. It makes up about 60 percent of body weight and is involved in almost every bodily process. Your body cannot make or store water, so you must replace what you eliminate (i.e., urine, sweat).