Because of his metabolism, his diet, or his appetite.
Bob Dylan was never that excited to be influential with the Hippies. His memoirs are pretty harsh about it. Here's a good starting site:...
Wally Pleasant
That is his girlfriend at that time, Suze Rotolo.
Bob Dylan is an amazing singer/songwriter. He is in 1 movie called masked and anonymous. He has many songs. My father who is a big fan has been to 217 concerts of his!