Taekwon-do again

It was Taekwon-do again today. We had 2 and a half hours lesson as to replace last week's. There is 1 more hour to replace on next Saturday. I begin to dislike this torturing and tiring practice because every time I will sweat like nobody and have legs ache afterwards and that ache resist for a few days. I can't imagine how am I going to stand this for another 10 weeks.