Can a cylindrical pillow sleep all night?

It's just different personal habits. Pillows in the sixties and seventies were all cylindrical, but in recent years they have all been replaced by flat ones, so it's certainly no problem to sleep for one night. In fact, scientific cylindrical pillows are helpful for patients with cervical spondylosis. What kind of pillow we pillow is also a personal preference. As long as you sleep well.