Boston Celtics forward Jae Crowder is struggling to cope with his minutes restriction while his left ankle is healing.

Crowder was spending time on the exercise bicycle when off the court in order to stay warm during Boston’s 109-103 loss to the San Antonio Spurs on Friday. The extra cardio paid off, as Crowder scored 18 points and shot 4 from 9 from 3-point range.

The 26-year-old revealed his frustration with the limitations and how the bike has helped him, per Mark Murphy of the Boston Herald:

“Around 20 to 25 (minutes). I think I played a little over tonight because I got a little frustrated with it,” Crowder said of his alleged minutes limit. “(The bike keeps) the blood flowing on the ankle. Like the Minnesota game I couldn’t go back into the game because it just locked up on me. I was just sitting on the bench.”

“And I just want to do something differently now because I do feel like it’s gradually getting better, but that time when I’m off the court, we just have to do something to keep it going, keep the blood flowing, because it feels good when I’m coming off,” Crowder said. “So that’s just one thing that I’m probably going to do for a little while.”

There has been talk about Crowder missing an extended amount of time, but he seems to be taking it day by day.

“For sure there has been (that discussion). It’s come across my mind,” he said. “We talked about it with the training staff. If I probably have one more game like I did in Minnesota where I couldn’t go back into the game, I think it’ll cause me to sit a few. But if I keep gradually progressing like I am right now in the past few games, I’ll be fine.”