caffeine

During the test, for example, if a user saw a sponsored prompt that said, “What energy drink has the most caffeine?” and clicked on it, Sparky responded.

Coffees made with extra ingredients like mushrooms, protein and collagen are known as "functional coffees" - which aim to provide consumers with benefits beyond the typical caffeine boost.

“By two o’clock in the afternoon, they put me in a conference room,” says Matthews of her subsequent caffeine crash.

To improve sleep quality, consistent bedtimes, limiting screen use before sleep, reducing caffeine and alcohol, and maintaining a quiet, cool environment are all advised.

Marcus added that "caffeine is also a diuretic, which could potentially reduce blood pressure and in turn lessen AFib risk. Several other ingredients in coffee also have anti-inflammatory properties that could have positive effects."