Deep Breathing Exercises (Diaphragmatic Breathing):
Deep breathing helps activate the parasympathetic nervous system, promoting relaxation and reducing stress. Try inhaling for 4 seconds, holding for 4 seconds, and exhaling for 6 seconds to trigger a calming response.

Progressive Muscle Relaxation (PMR):
This technique involves tensing and then relaxing different muscle groups in your body. It helps release physical tension and activate the body's relaxation response, promoting a sense of calm.

Grounding Techniques:
Grounding exercises like the 5-4-3-2-1 technique (identifying 5 things you can see, 4 you can touch, etc.) help bring you into the present moment, breaking the cycle of stress and anxiety and helping you reconnect with your body.

Cold Exposure (Cold Showers or Cold Compresses):
Brief exposure to cold can help reset the nervous system, promoting alertness and boosting mood. Cold showers or applying cold compresses to your face can stimulate the vagus nerve, helping to balance the nervous system.

Yoga and Gentle Movement:
Gentle movement practices, like yoga or tai chi, can help regulate the nervous system by combining mindful movement with deep breathing. These activities reduce stress, increase circulation, and promote emotional balance.

Mindfulness and Meditation:
Mindfulness practices, such as meditation, can help calm an overactive nervous system by bringing awareness to the present moment. Certain apps can guide you through meditations designed for stress relief and nervous system regulation.

Aromatherapy (Essential Oils):
Scents like lavender, chamomile, or eucalyptus have calming properties that can help regulate the nervous system. Diffuse essential oils or apply them topically to relax the body and mind.

Vagus Nerve Stimulation (Humming or Chanting):
Stimulating the vagus nerve through practices like humming, chanting, or even singing activates the parasympathetic nervous system, which promotes calmness and reduces the effects of stress.

Biofeedback and Neurofeedback:
Both biofeedback and neurofeedback help you become aware of your physiological responses (heart rate, brain activity, etc.), allowing you to consciously regulate them. These tools help rewire the brain to respond more calmly to stressors.

Nature Walks and Earthing:
Spending time in nature and walking barefoot on the earth (known as "earthing") can have a calming effect on the nervous system, reducing cortisol levels and helping to restore a sense of well-being.