Originally Posted by
caloso
I bet that third 30 was a B.
mainly a saddle issue lol I have a fizik arione and I can never get 100% comfortable with it (although nothing else I've tried so far has really been any better), so the last intervals usually require a lot more getting out of the saddle. my HR is pretty steady throughout, stays under 160 mainly, even last night doing 94% for 20mins (avg 159, and I think threshold HR is 165).