It wasn't because of a dazzling move Bush put on a defender, though.
Instead, Bush went down suddenly without being touched when he made a cut across the middle. Bush arose after briefly sitting on the turf, then walked slowly behind the huddle where the offense was getting ready to run the next play.
Bush flexed what appeared to be a slight ankle injury, jogged in place a few steps, then returned to take his regular turn in the offensive portion of practice.
After practice, Bush could laugh about the incident – and also about knowing that some people were scared about the prospect that the Lions' top running back had been injured.
He also knew he'd be facing questions about it from the media.
"I understand, yes," Bush said, laughing about the questions he knew were coming. "I'm used to it. It's football. It's going to happen. You're going to get little nicks here and there. The best thing you can do is jump on it right away, not let it linger on.
"That's where the seven years of experience comes in."
Bush knew that there was nothing seriously wrong with his ankle.
"I knew I just tweaked it a little bit – just planted wrong," he said. "Nothing I haven't been through. I'm good. I haven't missed any time, any reps."
Bush has been impressive in every way since signing a four-year contract with the Lions on the first day of free agency in March. He has worked diligently in the offseason workouts, and despite his star status has made a mark on his teammates and the Metro Detroit community with his approachable demeanor.
On the practice field, Bush has shown why the Lions made signing him a priority. He can provide an element that has been missing since
Bush and the Lions have one more practice to end this week's mandatory three-day mini-camp. After tomorrow, players disperse and are on their own until training camp opens in late July.
Bush feels like he's in a good position to produce in a new offense following his three months as a Lion.
"I feel like I've laid out a foundation, but there's still so much work to go for me and for the team," Bush said. "This is only the beginning. This is where it starts, right here in the offseason. We have to carry this over to training camp and just continue to get better every day."
Bush spent his first four NFL seasons with the Saints and the last two in Miami. Playing in Saints coach Sean Payton's wide-open attack prepared him for how he'll be used in Detroit. There hasn't been a steep curve learning the Lions' playbook.
"It's pretty similar," Bush said. "This playbook, from a terminology standpoint, is a little bit easier to learn. That's probably because I've been in the league gong on eight years now, so I know pretty much everything. It's just different terminology. It's pretty easy for me to pick up.
"It'll definitely be similar to what I did in New Orleans – just being split out wide and motioning and shifting, and catching the ball out of the backfield, and running the ball. It's going to be similar."
Bush is facing one new responsibility in his career back home in Los Angeles. Until camp opens, he'll be on diaper duty – and everything else that goes with being a new father – for his daughter, Briseis, born to him and fiancée Lilit Avagyan on May 6.
"I'm looking forward to getting back to my little girl and being a father," he said.