I have always wondered what is safe... sometimes my heart rate goes high and I get scared while working out.
Garmin Unisex Forerunner 235 Gps Heart Rate Monitor Watch
Find Your Heart Rate Zone | He and She Eat Clean
Clean Eating Lifestyle
Timex Full-Size T5K561 Health Touch Plus Heart Rate Monitor Watch * For more information, visit image link.
Heart Rate Monitor
Pyle Sports PHRM20 Marathon Heart Rate Watch with USB and 3D Walking/Running Sensor -- More info could be found at the image url.
Topeak PanoBike Heart Rate Monitor >>> Details can be found by clicking on the image.
Pyle Sports Heart Rate Monitor Watch with Step Counter, Calories Expenditure and Pc Link -- Details can be found by clicking on the image.
Finally! An article that explains heart rate zones in an understandable way! How to apply heart rate monitoring to your training and running to maximize results and stay in the right heart rate training zones.
Polar FT7F Black/Gold Heart Rate Monitor ** You can get more details by clicking on the image.
Oregon Scientific SE138 Strap-Free Heart Rate Monitor -- Learn more by visiting the image link.