Here’s everything you need to know about drinking coffee while fasting.

For adults, the recommended maximum caffeine intake is approximately 400 mg daily, roughly the amount in four cups of coffee. This can vary depending on the type of beans and the brewing method.

Espresso is made from the same species of beans as traditional coffee, but they’re roasted longer and ground to a very fine powder. One-ounce espresso shots are served typically in small cups.