I did a prépa intégré and it was significantly easier, mostly because, I lived on campus, I didn't have to commute (I get car sick so close to two hours of bus every day was tough in high school) and I didn't need to stay all the time in a school. When I had free time, I could go back to my place...
So, I guess it's not the workload so much as the butt-in-chair, long hours always being in the same place. Similar to being in Japan actually, low productivity, but long long hours... I also had a lot of stress/anxiety in making sure I get admitted to the school I wanted so I did a lot of busy work to make sure my grades were perfect above and beyond just learning and understanding the materials. In retrospect, it was overkill and pretty much un-needed.
So, I guess it's not the workload so much as the butt-in-chair, long hours always being in the same place. Similar to being in Japan actually, low productivity, but long long hours... I also had a lot of stress/anxiety in making sure I get admitted to the school I wanted so I did a lot of busy work to make sure my grades were perfect above and beyond just learning and understanding the materials. In retrospect, it was overkill and pretty much un-needed.