I am a CNC college student who is about to graduate. I would like to ask if CNC is tiring. I heard that we have to work in two shifts. Please give me some advice from seniors

It depends on where you are. Every region is different. For example, I am in Changzhou, Jiangsu! During my internship, I worked 3 shifts! Then I worked 2 shifts of 8 hours. Now in foreign companies, I still work 3 shifts of 8 hours. My home in Yangzhou works 2 shifts of 12 hours. CNC is divided into light industry and heavy industry. I work in Sany Heavy Industry. I almost died from exhaustion during that time, working two 12-hour shifts, and the workpieces were hoisted by a crane! Now I am in Biomet Medical Equipment, and I feel so relaxed. I have gained 20 pounds in one year, so the difference is still huge!