I purchased the Casio Phys CHR-100-4 Heart Rate Monitor around three months ago as part of my new weight loss drive. I'd often heard it said that lots of walking was the key to weight loss, but apparently there really is more to it than that! The "fat burning zone" science tells us is the zone within your heart rate range where your body burns most fat. This is said to be between fifty and sixty percent of your hearts maximum beats per minute rate. What this watch and monitor does is ensures you exercise within this range, for maximum fat burning results. Exercising over sixty percent of the hearts maximum is good for you too, but this will make you ...  Read the complete review