Sleeping Early | hormonal balance |

Early sleep causes an increase in ghrelin levels. Sleep disturbances also produce a rise in ghrelin and a fall in leptin levels, causing an increase in appetite and increased insulin resistance, probably because of disturbed GH levels.
Sleep has several physiological benefits, including:

Glymphatic flow enhancement by a factor of 10
Clearing metabolites and potentially toxic compounds that have built up in the brain over the awake state
Consolidating memory
Reducing synaptic strength uniformly which fosters the formation of long-term patterns of synaptic transmission. This is responsible for memory formation over the long term