the key is warmup. for me, that means at least a 15 min warmup including 5 mins of being at my target HR for the test. this is my last drift test done a couple of weeks ago on a treadmill. My preference is a moderate pace done at 2% incline. the graph shows a 15 min warmup and then a 58 min drift test. my target AeT was an avg of 145, my actual avg was 146. I don’t worry if my HR is bouncing around between 145 and 150…which happens naturally based on the song I’m listening to, what I’m thinking about, did I take a sip of water, etc. if my HR gets a little above my target, I focus on relaxing and it drops a few beats. I never adjust my speed or incline during the test. I suspect that my test would have been just as successful at a target of 150, so that will likely be my target for the next test
