How Much Talking Should You Be Doing?

It might be a strange question to ask yourself, but how much do you talk each day and how much silence do you experience? But not just sitting in silence, but not actually having inner conversations with yourself also.
Overtalking is one of the major reasons for people’s confusion and mental exhaustion. When we speak too much, we are using up a lot of oxygen to the brain and making more fatigue in the body.
As a society we tend to encourage the expression of speech, but how much is a good physical, mental and spiritual amount that is healthy and balanced?
Namaste,
Yogi & Yogini