When we are awake and active, our brains are in the beta state and this is the state we spend most of our time in. If we want to increase concentration and cognition, we seek to change from the beta to the alpha state because it is in this state that information can be processed more effectively, complex situations analysed more quickly and tasks managed more easily. In addition – and this is surely where the comparison with drugs originates from – studies have found that the switch from beta to alpha brainwave states also promotes the distribution of certain neurotransmitters and hormones. These include endorphins, noradrenaline and dopamine. In humans, these feel-good substances generate a feeling of joy and happiness.