My favourite lesson

I'm studying since I'm six years old and I think that my favourites lesson are biology and physic. The first one because I like to know more about our body, our past, about illness and because in a near future I want to study medicine. The second one it's probably strange but for me physic is like a continuous challenge because I need to think a lot for solve a problem. At that moment I'm not doing biology and I'm rather upset for this but next year I want to study this lesson. The other problem is that I like physic but at that moment I think that I need to improve a lot my physic knowledge.