Depends on what you mean by best. Short answer is you need to define what is best for you and your style of learning. I have a similar background, my mother is Chinese, was born and raised in Taiwan and learnt Mandarin conversationally through her and in secondary school.
92,336 Helpful Votes. A. You will not get sick. The tea may be a bit stale and lack some flavor, but it would not harmful. This answer should not be considered medical advice...This answer should not be considered medical advice and should not take the place of a doctorâs visit.
People who drink large amounts of caffeine, including caffeine from green tea, for long periods of time may experience irritability, insomnia, heart palpitations, and dizziness. Caffeine overdose can cause nausea, vomiting, diarrhea, headaches, and loss of appetite.