About 6-8 cups a day. 2 of which were Starbucks medium americano and the rest were french pressed from various brands. Pretty strong stuff as well. I'd agree a

About 6-8 cups a day. 2 of which were Starbucks medium americano and the rest were french pressed from various brands. Pretty strong stuff as well. I'd agree about the caffeine sensitivity - I don't think it agrees with me at all.