Be kind and giving to others. Yes, compassion decreases stress plus a soft kind response to others dissolves their wrath.
Squeeze something. The physical act of squeezing releases some tension. Besides squeezing a tennis ball or sponge builds hand strength and is socially more acceptable than squeezing someone’s neck.
Shake. This is a natural response to stress and if you watch athletes they do it to eliminate great performance-destroying stress (watch swimmers, golfers, baseball players, tennis players, track and field contestants, football players. So swing and jiggle your arms to release your tension.