u/Th3G3ntl3man28

Hello I am 24 years old. I started mewing 2 weeks ago but recently my jaw is getting really tired and I feel exhausted and mentally tired too. I was clenching teeth for a long time and now that I start mewing I try not to clench my teeth. But is mewing supposed to be this tiring? I used to have pretty sharp jawline before I got fat. Thanks for any help!

I create slight vacumm and swallow and hold that position.