Daniel Farke said his team were brought back down to earth after their 1-0 pre-season defeat at Charlton Athletic.
Speaking post-match at The Valley, Farke said various factors had caused plenty of optimism in-and-around the City camp but he said the reality check could be positive for his group.
"I got the feeling in recent days that our mood was too good," said the City Head Coach.
"We had a lot of applause for our pre-season with the signings we had, the strikers were scoring and our new kits are pretty beautiful.
"Right now, I felt the mood was like we were favourites for the title in the Championship.
"But sometimes it's good to come back down to earth. I don't think we deserved to lose this game after 90 minutes.
"But anyhow, we deserved to have this result because in the first-half we were not there with our head and heart on the pitch.
"To be honest, I don't like excuses. Yes, we had two hard sessions yesterday and were a little bit late today but I don't want to hear too many excuses."
With a full week of training in wait for his City players, Farke says places in his starting eleven at St. Andrews next week are up for grabs.
"In the first four weeks, it was about finding togetherness and working on our strategy and philosophy.
"You can't judge the players too hard because the load is so big.
"But in the last two weeks, the individual performances have been important because we have to find a starting line-up.
"There have been some good performance and some things I wasn't happy with but the players now have plenty of training sessions left to impress."