Is it OK to drink black coffee right when I wake up at 6am if my fasting window started at midnight?

Does coffee break a fast?

I broke my fast by accident — had a sip of milk in my coffee. Do I need to start over or is it fine?

Can you drink sparkling water during the fasting window or does the carbonation break the fast?

Does black tea break a fast the same way coffee doesn't, or are they different?

Does drinking decaf coffee have the same benefits as regular coffee during fasting?