the pineal gland is activated through exercising through visualization and also by nourishing it.
First visualization. Imagine that you are in a forest and the forest is large and it is dark. Then imagine that there is a light above the trees. This light illuminates you in your surroundings. this will clear the gland.
Now nourishment. Certain foods will clear the gland. A little bit of alcohol daily, sometimes vinegar but better the alcohol. Exercise in the physical sense. Vegetables like carrots, onions and even celery eaten daily.