Have been given a heart rate monitor as a freebie yesterday & although I've got it working & understand the concept of using it to stop you under or over exercising (No chance there!) I can't quite work out how you calculate what level you should be exercising at? :huh: anyone know? tis all jargon to me :lol: for example how do I find out my max heart rate? run up & down the street & once I've collapsed I taken a measurement or what :lol: :lol: