The Miami Heat players did not make any excuses for the Game1 loss to Chicago.
The Heat returned to practice Tuesday afternoon.
LeBron James said, "Every game is a must-win in the Playoffs."
James scored just 2 points in the first half of Game 1.
The league's MVP realizes this series is going to be about effort along with X's and O's.
Dwyane Wade returned to action after missing Game 4 in Milwaukee.
Wade said, "No excuses, they came in and they beat us. We have to make adjustments for tomorrow night."
The Heat trail the best of 7 series one game to nothing.
Games 3 and 4 will be played in Chicago.
The Bulls played shorthanded against Miami.
Guards Derrick Rose, Kirk Hinrich, and Luol Deng all were out with injuries.