After each of their three underwhelming performances last week, the Warriors had little trouble identifying the root of their problems. A group trying to play deep into June for the fourth consecutive year was laboring through the doldrums of the NBA calendar. With a four-game home stand looming, head coach Steve Kerr made one thing certain to his players at practice Monday: Mental exhaustion can no longer be an excuse. "We're going to be in our own beds the next week, and we have great teams coming in," Kerr said. "We should feel like this is a week we can take advantage of and be alert going into the break.