I'm glad you brought this up, Catrin...as I've been wondering about my HRM on my Sigma cycling computer. When I remember to wear the strap, I noticed that my HR has never gotten above 136, even on the steepest of climbs. It usually hovers around 108-110, which I think is fairly low...considering that I'm usually working up a decent sweat. It takes a LOT out of me to get my HR up with this monitor. Either my heart is in terrific shape or that HRM is totally wigging out on me. After seeing how low it's registering on the monitor, it sort of makes me not want to wear it, because then it makes me feel like I'm hardly doing anything...even though I know I am.

Linda