Training objective: one hour easy recovery ride with the cadence between 80-100 rpm's Wasn't part of your instructions, but I've been experimenting with some breathing techniques - some inspired by Patrick McKeown's book, "The Oxygen Advantage" and others I came up with to prevent side cramps when we had to run in school. The more extreme techniques are good for dropping the heart rate by a good 10 % (and training it to use oxygen more efficiently), but otherwise, I can reliably get the heart rate down by 5% within a couple of seconds just with a deep breathing exercise. Much easier on the road bike where the terrain is even and, in general, the effort isn't as extreme as on the MTB, but it works on both - it just requires concentration. :) Threw in a little sprint at about the 1 hour 18 minute mark, hoping to get a KOM but I only tied my previous best time - pffft! Interrupted the ride after about 1 hour to take the bike into a local shop and book a service for later in the week.