Healthy sleep cycles last about 90 minutes and repeat 4–6 times per night.
Disruption — from stress, noise, temperature, or late screens — can break these cycles, leaving the body half-rested even after a full night in bed.
Nutrient | EFSA-approved function | Role in sleep quality | Food sources |
Magnesium | contributes to normal functioning of the nervous system and to normal muscle function | supports muscle relaxation and calm neural activity | nuts, seeds, leafy greens |
Vitamin B6 & B12 | contribute to normal psychological function | support synthesis of neurotransmitters such as serotonin and melatonin | fish, poultry, legumes |
Niacin (B3) | contributes to reduction of tiredness and fatigue | supports cellular energy metabolism during night repair | peanuts, whole grains |
Vitamin C | contributes to protection of cells from oxidative stress | helps neutralize stress-related free radicals | berries, citrus fruits |