I can text the words, "I love you" from 1000 miles away, and can change your heart rate, breathing rhythm, pupil dilation, and metabolism.

Or you could me text something ambiguous like, "is your door locked?" and affect my nervous system in a negative way.

The language centers in our brains, responsible for processing incoming data in the form of symbols (words), are integrated into the same regions that are critical in autonomic nervous system control (respiration, cardiac, endocrine, immune systems). Our intertwined neurons make language a direct influencer on our body's reactions.