Mazagran (sometimes misspelled as Mazagrin) is a cold coffee drink that originated in Algeria. It is typically served in a tall glass, and is made with coffee and ice. Sometimes sugar, rum, lemon or water is added. Sometimes a fast version is achieved by pouring a previously sweetened espresso in a cup with ice cubes and a slice of lemon.
10 years ago I stopped using sugar, I found it took a long time to get used to the taste of my coffee without sugar and I was expecting it to be the same trying to switch to black coffee. I know it’s only my first cup of black coffee but I actually like it more than I do with milk. So much so that I was motivated to leave this post. More simple, much better.
Caffeine is a natural stimulant that works in your brain by blocking the effects of adenosine, an inhibitory neurotransmitter  . This increases neuronal firing in the brain and releases other neurotransmitters like norepinephrine and dopamine which improves mood, reduces stress, increases vigilance and reaction time and general brain function  .
Caffeine, the most widely consumed psychoactive substance in the world, is the best known ingredient of coffee. Its beneficial effects on the human body has been researched quite well, but coffee as a whole is a complex beverage with a thousand different substances. Some studies argue that decaf and caffeinated coffee may have the same health effects and suggest that it’s not the caffeine that is responsible for most of coffee's health benefits.
Caffeine in the black coffee act as energizer, since it will activate the heart beat and the blood circulation, and further energize us to do a lot of work. It will also give us extra energy for our performance and endurance during the exercise. We know that exercise is the perfect companion to any kind of diet for weight loss. In addition, it is suggested to drink black coffee prior or during the exercise.