Allan writes, The purpose of the filter course is to prevent fine soil medium particles from washing into the drainage layer causing clogging or reduction of the drainage capacity of the drainage layer.
Just how much caffeine is too much? For the average person, up to 300 mg of coffee a day, or two to four cups of the average brewed coffee, is a moderate amount that isn't harmful. But once you hit more than four cups, you may experience less-than-desirable side effects.
Too much of anything is not good and caffeine (and ultimately coffee) is no different. First, excessive caffeine intake can have detrimental effects on your health by contributing to anxiety, irregular heartbeat, insomnia, poor sleep and daytime fatigue.ata from the Harvard School of Public Health estimates that 54% of us (over 18) drink coffee daily and the average intake is 3.1 cups, to be exact. (source) So itâs no wonder why we all (or at least the gentleman at my breakfast) would probably like to know if itâs a healthy drink choice.