Not a dream exactly, but last night, drifting off to sleep, I had the sensation of riding a bike. You know how after doing something intensely for a long time, your get the sensation that you're still doing it even after you've stopped?

Although I hadn't ridden very far yesterday, I rode often, up to 30 minutes at a time: from Port Authority to the gym, 15 minute spin of stationary bike, ride to meeting and back to office in the morning, ride from office to another meeting, short ride from meeting to site visit, then a short spin around the lower end of Central park before heading through Times Square to Port Authority for return home.

The funny thing about the Citibikes is that they're simultaneously easy and difficult. The gearing facilitates getting the 45 lb bike underway from a stop and up inclines, but it still feels like you're riding an elephant. Then, when it comes to flats and negative grades, it's easy to cruise along in their top gear, but at just -2%, you're spinning out before you've gone 20 yards. So at the end of the day, it turns out I'd spent nearly two hours on Citibikes. Normally it has to be more like 8 hours of riding before I get that sensation of still being on the bike when drifting off to sleep. But factor in the bike's relative unwieldiness and all the zig-zagging associated with crossing town diagonally, dealing with traffic and such, it felt like I had been on the bike ALL DAY.