Would it be alright for my 4 month old German Shepherd to walk quickly next to my bike while I ride it short distances?

Somewhere in your DVDs or written word, I read that one should not jog with a dog younger than 12 months of age. My German Shepherd is 4 months of age and I was wondering if it would be alright to have him walk quickly alongside my bicycle as I ride at a slow speed for short distances? My thought was that it would be good to have him get used to this at a young age so as not to pull me off my bike as he gets older and stronger. I have thoroughly enjoyed your tapes and your written training materials and would greatly appreciate your thoughts on this matter.

Cindy,

Thanks for your help! That is one option I did not consider.