You are supposed to exercise. It makes you stronger, faster, healthier and may even prolong your life. However, every time you exercise, you risk injury and many sports injuries last forever. Depression, heart attacks, strokes, obesity and diabetes are all associated with a sedentary lifestyle. A twisted ankle can change an active person into a sedentary one. A torn anterior cruciate ligament or meniscus of the knee has a greater than 50 percent chance of causing permanent pain within five years, regardless of the treatment.
Good treadmills have a lever that raises the front end to simulate running up hills, because running on level ground does not do much to strengthen your upper leg muscles. Running strengthens primarily your lower leg muscles.
Many body builders and weight lifters are overly concerned about what they eat and what food supplements they take. If you want to grow larger and stronger muscles, it helps to understand how food can help your training program. Anything that helps you recover faster from a hard workout will allow you to do more work to make you stronger. Scientists have known for years that you recover faster by eating immediately after you finish your hard workout.
The only advantage to exercising while carrying weights is that you can get more exercise while moving slowly. To strengthen your heart, you have to exercise vigorously enough to increase your heart rate at least 20 beats a minute above resting.
If you think you would enjoy jogging or running, here's how to get started. First, check with your doctor and get a good pair of running shoes. Start out by jogging slowly until your legs feel heavy or hurt or you feel tired.