I also have no curve in my cervical spine and have been managing a couple of bulged discs with chiropractic for about 8 years now.
I have the opposite problem – I have too much curve in my neck. So much curve that my head tilts back and I can’t even hold my own head up. Very painful. Does anyone else have this problem of too much curve in the neck? Why would some EDSers have no curve and others too much?