In some studies, melatonin release has been found to be disrupted by air travel, and researchers suggest that taking melatonin may help the body adjust to new time zones. (verywellhealth.com)
To make matters worse, sometimes children don't adjust to the new time and continue to rise one hour early. (bumpclubandbeyond.com)
Nobody's internal clock will automatically adjust to a new time zone. (babieslounge.com)