text: 15 minute is enough for me to do something like wash tooth and face etc, It reduce 55 minute. Recently, I saw a data report from the internet, it shows young teens at least need to have 8 hour for sleep everyday. For me, I think 9 hour is better, so I care about that 55 minute, it can make me feel more energy in morning. So if you are the students like me, and your school have the online classes option open, don't worry and stop wasting your time, just apply for it, trust me you will not feel regret for this decision in the future.