When you're stressed and feel the tension mounting you can fight the inevitable headache with a little acupressure. The point at the base of your thumb, known as Union Valley, helps redirect blocked energy known as chi in Chinese medicine.
To find this tension taming spot, open your palm wide stretching all five fingers. The little mound of flesh where your thumb meets your palm is the Union Valley. Take the index finder and thumb from your opposite hand and give that spot a moderate squeeze. Hold for about 30 seconds wile breathing slowly and deeply. Repeat two to three more times, then switch hands. File this tip away for the next time you feel the beginnings of a tension headache.