Something recently happen to my seat tube that won't allow me to put my shim, so I can not use my seat post until a new one arrives. It is also on my beater, so I do not want to start taking my nice bike out into questionable areas, thus I ride it without the seat post. Here is my question. Is riding without a seat post harmful? I know if I ride to low, my knees are damaged, but what about riding to high which is next to what I am doing?
I realize that it takes a lot of work to ride without a seat post, so I might do it for training purpose, but only if its not bad on my knees, legs, groin what have you.
Thanks for your responses.