Originally Posted by Carbonfiberboy

Try this: every morning, get up and pee, put on your transmitter, lie down, get calm, and take your morning resting HR for 3-5 minutes. Then stand up and watch your HR for another 3 minutes. Log the lowest steady resting number you see, and the average HR for the last 30 seconds standing. Really, log them in a spreadsheet or online or paper training log. A big difference between resting and standing, for sure 20 beats, means take a couple days off. An increase of 6-8 beats from your usual resting HR means the same thing..