Hi folks, I'm awaiting a heart bypass, afterwards I'm told I need to excercise (damn) so which bike? A racer is prob no good, I'd prob kill myself by coming off it with those narrow tyres. A bmx/off road tyre is prob no good, I don't wanna expend all that energy just to get the rubber moving but I DO fancy riding the canals. PLUS, my last experience of biking is about 40 years ago, i.e, frames etc found in the local cut, 3 speed sturmey archer etc etc Any suggestions much appreciated. Den.