I just had an ACDF on November 14. I can take the Aspen collar off for meals, showers and Dr. Said for sleeping which surprised me-- it doesn't seem like a good idea , but I do not change positions at all while sleeping due to a very good mattress which relieves pressure on joints. What kind of pillow do some of you use? Mine is a softer type so my neck doesn't get out of alignment hopefully. Also wonder if I could damage the surgery as I have bent over a few times but didn't bend my neck I don't think as my collar was on . Thanks for any input. I had surgery with fusion on C3-C6. Also-how successfully was your neck surgery in relieving the symptoms you had before--numbness, tingling in hands ,fingers, arms,heaviness in arms and legs and balance problems is what I was having.