Think back to the first time you had to present on a stage. Your hands trembled, your voice cracked, you didn't know where to look, and you kept dreading you'd forget your lines. Your whole body was braced.
A seasoned speaker moves differently. They read the room, adjust their pace naturally, and raise their voice only at the moments that call for it. It's not that the tension is gone. They've simply learned to apply it exactly when it's needed.
"At first I was afraid of the entire stage — now I find myself making eye contact with each person in the audience, one by one."