Black coffee contains few calories and no fat when consumed without sugar or milk added for flavoring, and has numerous health benefits that include increased metabolism, improved memory retention, higher alertness levels and weight loss. But excessive caffeine can cause stomach upset and insomnia – adults are recommended not consuming more than 400mg daily, which corresponds roughly with 4 cups of coffee consumed per day.

Caffeine in black coffee acts as a natural stimulant and can help increase energy levels, as well as stimulate the release of certain brain chemicals which promote cognitive function, concentration and memory. Regular coffee drinking has even been found to lower risks of neurodegenerative conditions like Alzheimer’s and Parkinson’s by up to 65%!

Drinking black coffee first thing in the morning can also help increase focus and attention, and prevent depression by stimulating serotonin, dopamine and norepinephrine production – possibly thanks to chlorogenic acids present in black coffee which may play a part in this effect. Unfortunately, its exact mechanism remains unknown.

Black coffee offers numerous health advantages that may enhance exercise performance, thanks to its caffeine content. By increasing adrenaline levels during workouts, black coffee may help push you harder during physical exertion. In addition, its effects may contribute to weight loss by stimulating natural processes responsible for fat-burning in your body; and this beverage may reduce feelings of hunger while curb cravings for unhealthy foods.

Black coffee can help improve liver health by decreasing levels of enzymes that damage it. Coffee contains certain compounds which protect it, including cafestol and kahweol; regular consumption also lowers the risk of hepatitis, fatty liver disease and cirrhosis.

Overall, drinking black coffee in moderation should not affect those sensitive to caffeine adversely. If this is the case for you, however, avoid it as this could interfere with sleep and lead to anxiety and stress. Also be wary about drinking it late at night as this can disrupt your circadian rhythm and make falling asleep more challenging than normal. Alternatively, decaffeinated black coffee offers similar health benefits; however it is advised not to exceed 2 cups in any 24 hour period as excessive consumption could increase blood pressure significantly.