Summer is always the time to get better in sports. It’s especially true in football, with all levels of the game nearing the first kickoff of the season.

Recently, Green Bay Packers defensive line caoch Jerry Montgomery showed just how intense some of those summer workouts can get. In a video he captured, two individuals battling over a tire is getting plenty of traction on social media.

It’s pretty easy to see why.

The video is only about 25 seconds long, but the drill seems to last forever. For both guys fighting for the tire, it probably felt like an eternity, too. Below is video of the drill, which highlights just how intense some of these football workouts can get: