Treadmills allow you to fast walk or run in comfort. Most machines come with a heart rate monitor. This should be your guide in how hard you should exercise. If you exercise in a gym, forget about all the other people around you. You are not in a race with them. You need to be working to your own plan. There are 2 commonly used exercises that you can incorporate into your own personal plan: constant pace training and interval training.
Constant pace training is where you keep fast walking or running at the same speed. It is good for building a good level of basic fitness. You should be aiming to be working out at about 70% of your maximum heart rate for about 30 minutes.
Interval training is where you work hard for a short period and then slow the pace down before repeating the cycle. A typical person may use their treadmill and workout at 80% of their maximum heart rate for 2 minutes and then slow down to 65% of their maximum heart rate for 2 minutes. This is then repeated throughout the workout. Interval training is particularly good for burning fat as it puts high energy demands on the body and raises the metabolic rate.
You can alternate your training by doing one session at constant pace and the next use interval training. Whichever type of exercise you use, it is important to warm up for 5 minutes before starting and then gradually decrease your exertion at the end of your workout.
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