I just found about mewing and I've started to fix my forward head posture daily and today I was about to start mewing, but when I tried to put the back of my tongue on the roof of my mouth, (I used the nggg-practice) I almost threw up. I tried it few more times but no progress.
Why I'm almost throwing up? Is this normal in the beginning? What am I doing wrong?
You are somehow triggering the gag reflex.. eh, can you explain what exactly you are doing? In detail?
Its possible you are shoving your tongue in too far back and it triggers the gag reflex.