For my Physical Education class, I had to do a sit-up test. I tried my best and reached the maximum amount (75 sit-ups). Two days after this test, I felt pain in my chest. When I try to straighten my chest (more like align it straight), I feel pain. When I bend my back forward just a tiny little bit, it doesn't hurt. This is the first day of the pain.
Any help would be appreciated!
By the way, tomorrow I do a push-up test for physical education, and when I tried to do a push-up at home, I failed. I dropped to the ground because it hurt so much.