Small Ring Only Training, Spinning?
So I just got back from my usual 26 mile loop from San Francisco to Mill Valley and back, but this time I decided to try other peoples advice and start training only on the small ring. What a difference it made, I felt like I had way more power on the hills and sprints then I did when I used both the small and big rings. Would someone please elaborate the bonus' other than this factor? Also, what is "spinning"? I know these are kinda newbie questions, but please help. Thanks.