Heart rate variance – You can control with your breath. Slow deep breaths
Genesis 2:7
Then the Lord God formed man of dust from the ground, and breathed into his nostrils the breath of life; and man became a living being.
Job 33:4
“The Spirit of God has made me,
And the breath of the Almighty gives me life.
Breath is all over the scriptures Jesus us the breath of life and we can control if we are stressed out or on a rest and relaxed state.