Nocturnal Metabolism

Definition

A series of reduced and modified metabolic processes occurring during nighttime hours, characterized by a reduction in energy expenditure and differing hormonal sensitivity.

How it works

During the night, basal metabolism naturally decreases because the body doesn't need to produce as much energy for activities. Melatonin secretion increases while cortisol secretion decreases, reducing vigilance and activity. Insulin sensitivity changes, making carbohydrates less well-tolerated. Digestive processes slow down significantly and nutrient absorption is modified. Circadian adaptation is essential for optimal recovery and cellular repair.

Role

Regulates nocturnal energy economy and prepares the body for rest and cellular recovery.

Examples

• 10-15% decrease in energy expenditure, Increased melatonin, Lowered body temperature, Slowed digestive transit

Recommendations

Avoid heavy meals 3 hours before bedtime and prefer light and digestible foods. Limit rapid sugars and caffeine in the evening. Respect regular sleep hours to maintain a stable nocturnal metabolism.

Key takeaway

During the night, metabolism naturally slows down to favor recovery, making it essential to eat light in the evening.

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