Drinking coffee has many benefits. In addition to providing energy, coffee has been shown to improve brain cortex Healthy production, which can improve concentration and alertness. A recent study suggests that drinking at least three cups of coffee each day can increase brain cortex production by as much as 50%. Although coffee may be a caffeinated beverage, drinking it in the morning can increase alertness and concentration. It also contains antioxidants that can protect the brain against cognitive decline.