But the t-shirt and shorts environment prevented him from doing what fall practice allowed him to do: hit people hard.
It's been that aggressive approach that has made Barr one of the most heavily recruited defensive linemen in the nation, with over 25 offers.
Barr and his Lakewood teammates are preparing for their opener against Los Angeles Locke before they look to defend their Moore League title.
That's where his focus has been, with recruiting taking a momentary backseat, but he anticipates the arrival of September, where he'll put some attention back on recruiting.
"I'm in the process of setting up some official visits now, but I've been focusing on my team more than I have myself," said Barr. "Once the season starts, when I get the opportunity to talk to coaches, I'll focus on recruiting some more."
In the meantime, Barr said a few schools are standing out for him.
"Cal, Miami and Florida are three schools I know I'm going to visit and my top schools right now and UCLA is up there too. I probably won't take a visit to UCLA, I'll probably take an unofficial visit there. But Cal is for sure a visit, and so is Miami and Florida, but I'm not sure about the other two."
Barr said he doesn't have any favorites at this point, but that he's starting to whittle his list down.
"I don't really talk to some of the other schools I had been as much, like Nebraska and Tennessee, because I've kind of narrowed it down to my top schools," said Barr. "I would like to take all five of my trips, but I'm not sure if I'll take them all during the season or after the season."
Barr also doesn't have a time set for when he wants to announce.
"I'm not sure when it will be, it will be whenever the time feels right, when I've taken my officials and I'm ready," said Barr. "I couldn't say one specific school is recruiting me harder than the other."
Barr said that schools are looking at him as a defensive lineman, with some liking him for tackle, and some at end.
"Honestly, it doesn't matter to me, I just want my hand down," said Barr, who'll also play some fullback and tight end this fall.
Academically, Barr has a 3.7 GPA and took the SAT in the spring.
He's been selected to play in the UnderArmour All-America Game.