Short, plain-English explainers on how your body handles stress, and what to do about it.
Bilateral stimulation is a slow left-right rhythm, such as tapping alternate knees or following sound from ear to ear. It gives attention something else to carry when a replay keeps looping. You can try it by tapping left and right for two to three minutes.
Shaking gives the fuel that anger loads into your body somewhere to go. The science on tremoring itself is still young, but a short bout of vigorous movement is one of the better-supported ways to take the edge off anger and tension. Try bouncing lightly for 90 seconds to three minutes, then stand still and take one long exhale.
Heart-rate biofeedback makes the direction of change visible during an exercise. A falling number during a long exhale can show movement in that moment, but heart rate is one signal, not a verdict. Compare your number with your own usual, not anyone else's.
The physiological sigh is two inhales followed by one long exhale. The second inhale pops tiny air sacs in the lungs open again, and the long exhale offloads carbon dioxide and slows the heart. It takes one to three breaths, so it can fit the moment before you do anything else.
The window of tolerance is the band of stress you can handle while still thinking clearly. Above it, you may feel revved; below it, shut down. Knowing which side you're on tells you what you need: something to burn it off, or something to wake you up.
Stress isn't one dial from calm to stressed. Most people move between three settings: settled, revved up (anxious or angry), and shut down. They feel different and they need different tools, which is why one breathing exercise doesn't fit every bad moment.
Meditation trains attention and is easier when your body is already fairly settled. Somatic regulation starts with the body: a long exhale, shaking or rhythmic left-right movement can shift the state before you sit. If sitting still makes you more agitated, regulate first.