Leonardo has told his Inter Milan players they cannot afford to relax.
Inter have not lost since December 3 and the former Milan boss wants to see his new side keep up that run in the second half of the season.
"The tests never finish," said the Brazilian. "We have to always make it so we are ready, even when we have three games a week, and demonstrate that we have done our work.
"The round of the return matches is starting and we have to present ourselves well.
"My balance is positive when you look at what we have done so far.
"We have pulled ourselves out of a particular situation. There is feeling with the group.
"But there is still the whole of the second half of the season to play and we have to continue to improve."
