Many people enjoy one or two morning coffees without it impacting their sleep that night.
Research now links age to caffeine's effects on sleep. If you're caffeine-sensitive and recently celebrated a birthday, consider reviewing your coffee routine for better rest.
A Fitbit study shows adults aged 65-70 take 33% longer on average to metabolize caffeine. That afternoon cup may still linger in your system at bedtime.
Nathan Dumlao | Source: Fitbit
