So my coach says to push through anything. Anything can be placed in your mind. Push yourself all the time. Hes a former world champion, I take his advice very seriously. I always try to push myself as hard as I can when I train. Even if I feel I'm injured or really sore. Last week I was doing a ton of abdominal excercises. Afterwards I had to play doubles for our mens league. There are several former Olmypic badminton players in the mens league and the level of play is fairly high. My abs were really tired but I would jump smash and hit hard. Its really good doubles practice to play against all these former champions and see all the different styles of play. So my back is killing me after the games. I go to practice the next day, my back hurts. I keep training because I have the belief the pain is not pain at all, its just sore because its not strong enough yet. Two weeks later I play in a tournament, my back is progressively getting worse. Now my mindset is if I can get through the pain / soreness it will make me even more confident. I do terrible at the tournament. I have maybe 2 good rallies in singles, because I don't feel comfortable bending my back, or rotating. I can't jump because on landing my back hurts, my around the head is out of the question. I have my worst singles game of the year. Doubles, easy games until quarters. Play, realize that this game is going to be tougher but should win. We lose, I give it basically all i have left in my back. Now I'm planning on taking a week - 2 off. When do you feel soreness becomes pain? Or soreness becomes injury. When my legs get sore they are fine after a day even when I train hard. Back it seems is a different story. Why is that?