Women who drank more than 4 cups of coffee per day, had a 20 per cent lower risk of becoming depressed. The reason being the caffeine, a natural stimulant which stimulates the central nervous system and increases dopamine levels  . An increase in dopamine levels removes the symptoms of depression and anxiety  . And due to this people are less likely to commit suicide .
Numerous houses use the term chai latte to indicate that the steamed milk of a normal caffè latte is being flavoured with a spiced tea concentrate instead of with espresso. Add espresso shots for a dirty chai latte. Chai tea with a single shot of espresso. In addition, 1-2 tablespoons of instant espresso may be brewed while simultaneously steeping chai in the same container; a small amount of a dairy or non-dairy drink of choice is usually added to complete the drink.
Some health benefits of coffee come from the beverage's caffeine content and not necessarily from the coffee itself. For example, the review of studies published in Australian & New Zealand Journal of Psychiatry determined there was also a nonlinear association between caffeine and a lower risk of depression, in addition to the link with coffee itself. Caffeine, a stimulant, also has a beneficial effect on athletic performance, with research published in 2016 in the Journal of Sports Science determining that dosing with caffeine prior to physical activity increased "vigor" and decreased fatigue. To use this to your benefit before working out, drink a cup of black coffee about 30 to 45 minutes before you begin exercising.