When i wake up early in the morning i usually have a numb tongue. and its usually white.

Tongue thrust?: It's may be a combination of brouxism and tongue thrust, consult your dentist for treatment and cure..

White/numb tongue: See your Dentist 1st thing AM so he/She can examine. Coating may be Thrush, food choice, allergic reaction, improper before bed oral hygiene regimen. Numbness may be from bruxism, neoplasm, neurological disorder, allergy, neurological disorder, medication/supplement, and so many other possibilities.