My lower back has been hurting really bad since the last pt test 2 weeks ago . I only did my minimum situps , too . The last pt test it was the same thing , only i did way more situps . I went to the dr yesterday and got some good drugs thank God . Well , a good drug .
According to the above context, answer the following question.
Why was my lower back hurting badly .


I injured my back while doing physical training