My sister was exhausted from studying online during the pandemic

Question

My sister studied online from 7 ago until 6 pm and it was very tiring beyond normal school time

Answer 1

I think that's too long for an online classes. There should be breaks in between.

Answer 2

That is a very long time to study. How can she sit for all that long?

Answer 3

I don't think so that studyng online is too tiring. It's more exhausting when physically going to and fro than that of online.