What is the best head posture?

[Tttopgtoni]

People keep making different claims so I'm curious as to which is best for skull development

 

[mibembix]

I guess straight neck and head and little up

 

[valentine]

what is this question

 

[looksmaxxinglooser]

head forward and up straight sternum

third one ideal

 

[4Christ_sake]

People keep making different claims so I'm curious as to which is best for skull development

Neck at a 360 angle

 

[Tttopgtoni]

what is this question

What is the best neck posture