Speaking, just when you feel like it, is an activity requiring least possible energy (and prowess)

One can do it anytime. Anywhere. In any position. When faced with any situation. 

Almost anything else instead will require effort

Writing

Illustrating 

Singing 

Painting 

Recording 

Composing

Thinking 

Pausing 

Not reacting 

Almost anything else instead will require judgment. 

Will require you to reflect

Some people are so inexpressive, they only have words to share