Tag: Late coffee

According to the FDA, the half-life of caffeine is typically between four and six hours, meaning half of the caffeine you consume at 5pm could still be active in your system near bedtime. This raises the important question for many coffee lovers: can I drink iced coffee at 5pm without disrupting my sleep?

According to the Sleep Foundation, consuming caffeine within eight hours of bedtime can reduce overall sleep time and compromise quality. So, what time shouldn't you drink coffee after if you want to avoid insomnia and restless nights?

Research published in the Journal of Clinical Sleep Medicine found that consuming caffeine even six hours before bedtime significantly disrupts sleep, leading to a loss of approximately 41 minutes of sleep. This critical finding shows that your afternoon brew has a much longer-lasting impact than you might think.