Just how powerful is Novocaine

When I get dental work done, and I have had a lot of it, and get novocaine I always sleep SO WELL. I don’t reckon it is powerful as by the time I leave my dentist the novocaine is still there but 1/2 to an hour later is it totally worn off.

But that night when I go to bed I have the best sleep.

I must admit I don’t drink (no alcohol at all).

Could this be really physical or is it more of a pyschological thing? I can’t imagine novocaine being that powerful, but I sleep so sound and wake up so refresed the next day.

BTW normally I am a somewhat restless sleeper.

WAG: the whole process is enough of an ordeal, numbed or not, that you are plain tired.