Many rely on cups of coffee to boost energy levels, increase focus and promote alertness throughout the day, but it’s important to stop drinking it at a certain time. A survey by Statista Consumer Insights found that more than half of coffee drinks consume three or more cups per day, and having that caffeine kick too late can have disastrous effects on your sleep. Best time to stop drinking coffeeSleep expert Dr. Catherine Darley told The Focus that ideally, you should stop drinking coffee eight hours before bed as it can take that long to metabolize. That’s the time needed for the caffeine to…