My colleague introduced me to a gym and said it worked well, so I went with her. The night before, I was full of energy. I thought I could bear the intensity. But when I got up the next day, I felt backache, weakness and discomfort. This is a long time without fitness! I plan to go again in a few days, so I decided to come to the gym often in the future, not only for the sake of good figure, but also for the sake of healthy body.