Confirmed by doctor's records, I've lost almost 50 lbs in just over two months. That would be .72 lbs a day for 69 days. Long story short: I couldn't walk without pain for a long time and I just decided to 'let myself go.' -- Would I actually gain weight and blow up like a hot air balloon? Answer: Yes. -- I tried other methods, very focused on time and pace and it snapped me like a twig. After recovering I tried Polar HRM and, absolutely, it 'suits me.' -- It's a big, big difference --- I'll stop on a brisk walk, stretch, twist, drink water and I'm 'still in the zone,' while with the time and pace focus I was 'doing bad,' by such a pause, with Polar I'm just stretching out the workout (AND, it's apparently working). -- Another example, push up to the top of a hill, I'll pause -- I'm 'in the zone,' and when HRM dips too low I get moving again. I think this is a very, very natural way folks walk or ride bikes and I'm not training for th! e Olympics; I'm burning 550 calories a day.