about a month ago i injured my left knee during a intramural softball game at school. an mri showed some damage to a cartilage but nothing required surgery. well only in the past week has the knee started to feel better and as you can see i've taken the doctors advice to use biking as rehab. anyways, i was wondering if anyone had any recommended bike regimens to follow? other than my usual weight training i've substituted biking for running since i can't really do that right now. so if anyone has any weekly routines that would fit me well please do tell. to give you an idea of how fit i am, i have never really biked for long periods in quite a while, but i am pretty fit and run about a 5:30 min mile and sub 12 min two miles.