I've found as my aerobic base has improved over the last year, that I "cool down" very fast now. Pedaling in endurance zones keeps the heart rate in around the 140's. But when I get into longer descents - especially twisty roads where pedaling isn't an option all the time, my heart rate plummets and man does the gunk in the legs build up. Here's a graph from last week where I actually had the heart rate strap on. Climbing to the top of a pretty good size mountain, then descending a really narrow/steep/twisty road. Sucked at the bottom.
This goes for group rides too now where "no drop" is a policy. 3-4 minutes off the bike and my heart rate is in the 70's and it SUCKS getting warmed back up. Anything ya'll do to stay warmed up in cases like this? Pedal backwards? Ride the brakes and pedal through the resistance?