Awesome. Yeah that was my hunch. I definitely got that metallic taste in my mouth! Reminds me of my CrossFit days, only now recovering on my third time through the skimo plan from my ADS. It was a bit too scary/difficult to manage max effort on the stair master as we don’t have a long enough steep hill where we are, probably could have put more effort in but was afraid of my legs giving out and falling off the rig.
Thanks for the reply and I’ll take that into account!