Hello I've started using this US 2000 device since about a week on my neck. I tried different intensities and settled on "low". It definitely helps me sleep, and I feel more relaxed (nothing more) after using it. However the next morning when I wake up I feel a lot of unexplainable "anxiety" or "fear". This occurs whether I sleep 8 or 10 hours. Could it be that my sympathetic nervous system is rebounding to re-establish balance the next morning ? I am aged 26yo. Any ideas ? Should I just keep using it for the month ?

@Sterling Cooley I asked Gemini AI if I could use the US 2000 Pro to stimulate my vagus nerve and this is what it said below. Is there any accuracy to this? I just purchased the 2000 Pro, and now I am a bit concerned to use it. The short answer is no. You absolutely should not use the US Pro 2000 on your neck to stimulate the vagus nerve. Just as using this deep-heating device near your ears is highly dangerous, using it on your neck carries severe medical risks. It is universally listed as an absolute contraindication in physical therapy guidelines for a few critical reasons: 1. The Danger to the Neck's Anatomy The vagus nerve runs down the front and sides of your neck, packaged right alongside your carotid artery and jugular vein in what is called the carotid sheath. This area also houses your thyroid gland and the carotid sinus (which regulates your blood pressure). 2. Deep Heating Causes Chaos in the Neck The US Pro 2000 is designed to push concentrated, high-frequency acoustic energy deep into tissues to generate heat and increase blood flow. If you apply that deep heat to the anterior (front) of your neck: - Heart Rate & Blood Pressure Drops: The acoustic waves and heat can overstimulate the baroreceptors in your carotid sinus. This can alter the normal electrical pacing of your heart, leading to sudden, dangerous drops in blood pressure or heart arrhythmias. - Thermal Nerve Damage: The vagus nerve is not designed to absorb concentrated thermal energy. Attempting to heat the nerve can cause permanent thermal damage rather than the therapeutic "signaling" achieved by the microscopic, non-heating ultrasound waves used in clinical trials. - Vascular Damage: Heating the major blood vessels in the neck can cause damage to the endothelial lining or potentially dislodge plaque. 3. The Right Tool for the Wrong Job The clinical trials for Low-Intensity Focused Ultrasound (LIFU) use highly specialized, low-power acoustic profiles specifically calibrated not to heat the tissue. The US Pro 2000 operates at a completely different frequency and power output intended exclusively for musculoskeletal issues—like joint stiffness, thick muscle tears, or large areas of dense tissue.

Sterling, is this a correct illustration of the side view location of the Vagus nerve? Or is it further back, more under the ears? Asking for new friends ✨️ 💙

I am already running low on the 8oz gel that came with the unit and I found this on Amazon, 1 litre size for around $15. Has anyone found a better deal anywhere else? Is all Gel the same or should I be looking for anything special? https://a.co/d/0ctrk3PY

Be careful with your ultrasound devices. My power brick wire failed and started to spark. Pay attention to how you coil up or wrap your power cord.