And if the chest strap is not fitted properly, inaccuracy in reading the heart rate is very possible. So to alter this, there Reebok makes strapless heart rate monitor. The Reebok strapless heart rate monitor eliminates the need to wear chest strap. This would free the user of worrying so much about the fit of the strap. The strapless heart rate monitor provides an on demand only heart rate measurement. Strapless heart rate monitor does not give a continuous heart rate data and the measurement is only given whenever needed. This is because the strapless heart rate monitor requires the user to place two fingers on the monitor s sensor in a specific length of time usually between 4 to 13 seconds. Manual heart rate checking would require you to stop either in the middle or at the end of your run. Either way, you still have to stop. And by doing so, you would interfere on your whole run that would destroy your pace. With wristwatch heart rate monitor, there is no need to stop just to check your heart rate. Some special Reebok heart rate monitor models come with a cruise control training system that would automatically personalizes your target zone. Meaning, whether you are in a beginner, mid-lever or high intensity level, the Reebok heart rate monitor would adopt to your fitness level. This is possible through an alarm, both audio and visual, that would send a signal if you are out of your set zone. With treadmill, add we have to do is to step on it and off we go; no weather considerations, no outfit to match the cold, and no dogs to chase us while we run. Meanwhile if you think that treadmill alone would do the job of getting us fit, well you can set those thinking aside. Although treadmill will give us the total body workout, treadmill is incomplete without the device that gives us report, not on the length we are going but the rate our heart is performing. Creating an improvement with the running routine, athletes, trainers, runners, and health conscious individuals should have the S120, S810i, S610i S410, S625X, RS 200, RS100, and RS200sd. While you busy yourself to keep on tract, these Polar heart rate monitors are busy to keep your heart monitored and track your distance and speed.