Scientists have discovered that caffeine doesn’t just perk up your brain—it energizes your cells in a way that could slow ...

According to Gavin, most mushroom coffee products use less caffeine—about 48 to 50 milligrams—compared to an eight-ounce cup of coffee which contains 80 to 100 milligrams of caffeine.

Regular caffeine intake of 300 to 400 milligrams per day is generally safe but exceeding this can cause cardiovascular issues ...