By Aurelien Budzinski, 18 January, 2023

The sympathetic and parasympathetic nervous systems play an important role in the functioning of the heart rate. The sympathetic nervous system is responsible for activating the 'fight or flight' state and increases the heart rate by releasing neurotransmitters such as adrenaline and noradrenaline. This allows the heart to beat faster to provide more oxygen to the muscles and brain during a stressful situation.