So I started spin classes at my gym a little over a year ago. Didn't own a bike, and wasn't planning on buying a bike. Just wanted to mix up my workout a bit, and was always amazed at the sheer amount of sweat and pain I saw going on in that room. Needless to say, spinning kicked my ass for a while, but now I'm totally in love with it, and that's not even taking into account the weight I've lost. I do 3 or 4 a week, depending on my mood and how much lifting I feel like doing instead.
Anyway, I finally bought a bike - nothing special; a used, refurbished road bike. This weekend was my first real shakedown ride on it. Wasn't at all sure how it would go. Haven't ridden a real bike in many years. Mapped out a route that was about 30 miles. Didn't have any idea how the spin classes would translate to road riding.
Long story short, the ride was a cool breeze. Legs and wind were right there, and I stroked right along. Felt absolutely great, especially when I passed guys on much fancier bikes.
Just wanted to throw out this unreserved endorsement of spinning for conditioning. Paid off in spades!
P.S. Not for nothing, I know that 30 miles ain't the ultimate ride, but for a first bike ride, I thought it was nice to see the gym actually gave me some benefit, yeah?