FLORHAM PARK, N.J. — There are times, before a play, when it appears David Bailey’s body is twitching. He’s eager to get going toward what he views as the promised land. He’s anticipating the snap. He knows if he times it just right, his burst will allow him to attack the offensive lineman and get to the quarterback before they even realize what happened.When it plays out that way: bliss.“I play football for a lot of reasons,” Bailey says, “but getting a sack is the best feeling in the world. It’s like nothing else.”The twitch is always there. In many ways, it’s what got him here. It can make it feel like time is slowing down, while the offensive lineman in front of him is on edge, heart racing. Sometimes they jump too early, anticipating Bailey’s movement. Bailey has had many moments like this, in practices and games. One sack leads to another. QB hits mixed in with pressures.“Sometimes it feels like you’re entering a flow state,” Bailey says, “and everything is just falling.”Lately, Bailey has been in a flow state. That was clear during Tuesday’s joint practice with the Tampa Bay Buccaneers at the Jets facility, where he was so soundly defeating right tackle Luke Goedeke — a quality NFL veteran lineman in his own right — on most reps, to the point that it started a brawl. Bailey had beaten him with speed in a one-on-one rep. In Round 2, Goedeke jumped early on a false start so Bailey asked for another rep. Bailey attempted to win with power and Goedeke held the edge — and then Bailey patted Goedeke on the helmet and started a fracas.The Bailey wins continued into team drills, and from both sides of the formation. The Jets are seeing Bailey in his “flow state” and it’s been a sight to see.“He’s been as advertised,” says defensive line coach Karl Dunbar.The two early MVPs of Jets training campZack RosenblattTo that end, The Athletic followed Bailey through the entirety of Wednesday’s practice. Every rep. From the beginning of the practice to the end.Here’s what we saw. (It was more of the same.)Sometime before 10 a.m.: Media isn’t allowed onto the practice field until just before the official start time, but Bailey gets his work in long before that. His teammates say Bailey has the work habits of someone who’s already been in the NFL for a long time.“I think he already has a lot of elements of a pro,” says linebacker Demario Davis. “He’s mature for his age.”Bailey is one of the first players into the building, into the weight room and onto the practice field — and most days he stays after to get some extra pass-rushing and run-stopping reps in with any teammates willing to join him.Safety Minkah Fitzpatrick, one of the team’s elder statesmen and leaders, says Bailey is “always locked in.” He says he often finds Bailey alone in the weight room, wearing headphones, putting in work.Bailey doesn’t carry himself like a typical high draft pick, even in the way that he dresses. He doesn’t care much about swag or looking cool. He doesn’t wear gloves or sleeves. His socks are low. He doesn’t wear jewelry. The only flashy thing he wears is a smile.Bailey says he practiced being a pro during his last season in college. “Last year at Tech I felt like I started my journey as a pro early, just in the way I approached the game, the way I took care of my body, the way I approached the playbook … I feel like I took that step at Texas Tech to function like a pro. The transition hasn’t been too difficult or too different.”