hey all I'm just wondering which RHR should I use for the zone training, the one right after I awake which is 80 or when I'm normal which is between 70-100. It can be 70-90 any given second so my heart rate fluctuates alot and I'd like to at least stabalize it then lower it. I'm gonna record my post waking RHR for 3 days and use the average of that. Or I can use my current one now. But iunno if I do use my post sleep RHR I'll use this to find the target HR, MHR - RHR =123, 75% of that is 92.25, does that sound right? I'm new to this thing and its pretty cool, I didn't know even going over board and not staying inbetween that zone for prolonged periods could actually be detremental to you health opposed to beneficial.

Generally you should take your resting heart-rate at a point in your day when you haven't participated in any physicial activity in a reasonable while and are in a relaxed state.

ok, so would the one right after you wake up be good? and is the method I used to calculate my target zone accurate? It seems a little off cuz I calculated an athletic person my age, 203-50,75% is 114+50=164 which seems a little high for a fit person. :confused: I also read that all you have to do is find the percentage of the zone your aiming at of your MHR. In my case , I'm 16 n my RHR is 80, so one site says for 75% I should be aiming 173 beats per minute and another says 152(just getting the % from my max), so would some1 please help me or double check this? I really appriciate it thanks!

Sorry, I didn't clarify enough. Take your resting heartrate in the afternoon or later in the day in a state such as I mentioned - you want to have been concious for quite a while before you do so.