Medicine for Headache?

What medicine do you take when you have a bad headache? A paracetamol? What is headache? It is an effect. There is something else that is causing it. The cause could be one of the following or something else:

Physical science and Spiritual science!

You may be wondering what the students are doing and how does it connect to the saying of Swamiji. The students are exhibiting physical science experiments. Where as, the saying introduces spiritual science. The experiments describe characteristics of elements