Practising mindfulness, mediation, yoga, thought stopping and breathing techniques can all help to keep this system healthy and switched on.
Breathing techniques offer a quick and effective method.
Studies have shown this can actually enhance your performance and sense of well-being.
Try simple mindfulness meditation and practice it at least once a day to give yourself the opportunity to see if it makes a difference.
When you learn how to do this, you find you are able to focus your attention on the task at hand – in this case your assignments or exams.
Mindfulness also helps you to practise feeling calm in the mind and the body by releasing those neurochemicals that switch on the parasympathetic branch of the automatic nervous system.
They are easy to learn and can be practised any time, any place, anywhere – because your breath is always with you.
The trick is to learn to breathe deeply by drawing your breath down into the abdomen.
As its name suggests, the automatic nervous system is not under your direct control.
But you can learn techniques to help you manage how you are feeling and to relax or calm down.