Napoli coach Francesco Calzona offered no excuses after their 3-0 home defeat to Atalanta.
The hosts were completely caught out for the surprise defeat.
Calzona later said: "Training a national team and a club can only be done in certain moments like this. Yes work purely on the physical side because you miss the players during the breaks. You focus on the condition, so it was in this case.
"The Champions League is far away, we have to be honest. For the rest we are still in the game but we have to win and be solid.
"If we don't have it (the strength to compete), we have to find it. If we don't show our pride, I and the boys have failed. We have to do more to try to finish this season in a dignified way."