James continues to improve from bout with cramps, joins Heat to prep for Game 2 of NBA Finals

Miami Heat forward LeBron James shoots the ball during practice on Saturday, June 7, 2014, in San Antonio. The team plays Game 2 of the NBA Finals against the San Antonio Spurs on Sunday. (AP Photo/Eric Gay) (The Associated Press)

LeBron James was back on the practice floor with the Miami Heat on Saturday, two days after he was forced to leave Game 1 of the NBA Finals because of cramps.

Game 2 of the series against the San Antonio Spurs is Sunday night.

James says he's continuing to improve and was planning to get some cardio work in on Saturday to get his heart rate up. He's also been getting hours of treatment and stretching in as part of his recovery regimen, along with plenty of fluids.

The air conditioning system that failed in Game 1 of the finals has since been repaired. Temperatures in the arena rose to nearly 90 degrees on Thursday night.