High blood pressure, or hypertension, can be a serious condition that requires medical attention. However, there are some things you can do immediately to help lower your blood pressure. Here are some tips from the search results:

1. Take a deep breath and try to relax: Stress and anxiety can raise your blood pressure, so taking a moment to calm down can help lower it. Learning breath exercises that slow your heart rate and promote relaxation can also be helpful.

2. Drink some water: Dehydration can cause your blood pressure to rise, so drinking a glass of water can help.

3. Try some physical activity: Going for a walk or doing some light stretching can help lower your blood pressure. Regular exercise means you regularly increase your heart and breathing rates. Over time your heart gets stronger and pumps with less effort. This puts less pressure on your arteries and lowers your blood pressure.

4. Take a warm bath or shower: Stay in your shower or bath for at least 15 minutes and enjoy the warm water. This can help relax your body and lower your blood pressure.

5. Place cold compresses: Placing cold compresses, such as ice packs or cold towels, on your forehead, neck, or wrists can help constrict blood vessels and lower blood pressure.

Its important to note that if you have high blood pressure with complications such as a stroke or heart attack, you should contact your physician without any delay and not attempt home remedies in such grave situations. Additionally, if calming techniques don’t help, then consult a physician immediately.