I train chest twice a week (e.g. Monday, Friday, Tuesday, Saturday, etc.).
I experimented with different volumes, and I found I have the best gains with only 3 sets. [ of flat DBs bench] [5/7 reps]
If I do more sets the following time I'm not fully recovered and plus I start feeling mild inflammations in the shoulders, and I can't progress.
I think people train with many more sets?
Perhaps they use lower intensity? (I always go as heavy as I can)
will rep good answers.