HRT Was high at start. however rest of the time, i was climbing steady but stuck on zone 2, and really couldnt push myself more then that, i felt i was maxed out, more less stuck in one zone, not a head thing, i was wanting to go harder, but just not happening, physical thing. i assume, feeling healthy and doing everything proper, but i did a ride yesterday for 2 hours and after an hour or so i felt spent, like an effort to even do small hills that usually require no effort. so i dunno i might try a few days off and see what happens? or maybe i am stuck like this for a whole year