Many studies in recent years have confirmed that sleep is beneficial to learning and memory  Not only does sleep after learning have a memory consolidation function, but sleep before learning is also necessary for subsequent learning  After prolonged awakening and learning, synaptic connections in the brain increase  Enhancement leads to saturation of the synaptic gap and hinders subsequent learning
The connection activity of the synapse takes up space and energy
 The role of sleep is to weaken the synaptic connection to the basic level, providing sufficient space and energy for subsequent learning and memory