Most of us are guilty of it - using laptops, smartphones, or tablets before we sleep. For some of us, it’s even become a daily routine, or even a ritual. Recently, there’s been a rise of articles that suggest phone lights may have effects on our brains that can cause mood disorders, sleep cycle disruptions, and even cancer. But is this all true? In our second episode of Brain Waves, Neurogeneticist Dr Azlina Ahmad Annuar helps us understand what might happen to our brains when we use our devices before bed, and how it might cause health problems.