While I'm in message posting mode .... I bought a heart rate monitor ( cos they were cheap in Aldi and I love gadgets ) and checked my resting heart rate 3 times over the last few days - its averaging 48. According to the chart I'm an athlete ... I think not!!!! Maybe its broken!! After 45 minutes full on on the spinner, I'm knackered and it only reads 120? Am I some kind of a mutant or is this usual.