​Millions of people who struggle to get the recommend 8 hours sleep may have an answer or at least an aid to help them manage full days at work. The US army thought it was beneficial to work out and create an algorithm to recommend a suitable level of caffeine to get you through your working day, say the optimum level to function based on your levels of sleep + your daily routine. 

Though it wasn't initially intended for you and I and was put into development to enable the troops to operate at maximum efficiency, it will now be made available in the next few months in the form of an App to guide you as needed. The App will draw on data that had been collected over decades of sleep data.

Numerous studies show that reaction times in the sleep deprived can be up to 40 per cent slower than what would be considered normal, a comparison can be made against someone who would be over the drink driving limit, so being sleep deprived can be dangerous. A third of Britons sleep on average between 5-6 hours a night, for a sleep of 5 hours and a wake up time of 6am the App would recommend a cup of coffee at 7am and 9am to set you up for the rest of the day. 

If you slept for 6.8 hours for 5 consecutive nights then you'd require 200mg of caffeine or two filter coffees.

The Independent has reported on a 20 year study where almost 210,000 people were studied since 1976. Dr. Frank Hu joined the team in 1996 where he aided in the organizing of the data collected over the last 20 years. A huge 4.7 million person years of data was collected. Data on this scale meant that it took several generations of scientists to complete the study. Frank Hu asserts that the level of data collected here was necessary and useful due to the complexity of the beverage.
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He goes on to say that coffee's health benefits derive from not just a few of the compounds, but more likely the synergistic effects of many compounds, minerals and antioxidants. Many think of caffeine when they think of coffee yet many of the same benefits can be attained from both regular and decaf coffees. 

The study strongly indicated that regular drinkers of coffee typically lived longer and were less likely to fall to cardiovascular and neurodegenerative diseases and even suicide. Caution was given that not everyone responds the same way to coffee so drink in moderation and keep up with good healthy habits. 
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