Hi, I'm new to cycling (for fitness, anyway). I'm interested in cycling for weight loss and general fun. I'm confused about one issue though: if I want to bike for fitness, do I need a road bike or can I use a comfort or hybrid? I've read descriptions of different bike types, but they don't seem to specify which is better (if one is) for fitness. Thanks in advance for any advice.
-dregress
-dregress