"Of course, it's hard to breathe, to run," said Johnson, who recently extended his contract with Borussia Moenchengladbach. "The first couple of days, you can tell in warmups and stuff. You're breathing hard. But you get used to it."
US adjusting to Arena's system as World Cup qualifier looms →
The 29-year-old Johnson says, "It's wonderful to be able to carry on playing for this great club."
US international Fabian Johnson extends 'Gladbach contract →