Originally Posted by
sleepy
Dumb question I can google but don't want to: when trying to maintain fitness level in a time crunch, which is more beneficial; riding 14 miles of level surface on a road bike, or Fixed?
Popular opinion these days seems to be that high intensity gives you the most fitness benefits when you're crunched for time. You could conceivably get the same level of intensity on either bike. I'd think it's more about how you ride those miles than what bike you use.