interesting thread. I have a simple automatic BP machine w/cuff etc. you press a button and it takes your BP and gives you HRM too of course. after a long ride a week or so ago I showered and layed down on the bed and tested myself and did not see a low "resting" HRM. I was a little worried but this thread put my mind at ease. also, now I remember reading that regular exercise increases your metabolism. maybe this is part of that? exercise some every day and if helps you more than for just the time you are exercising.