Scan QR code on the ball to access instructional videos for safe heading technique training and games to use with the Heading Trainer! Leading concussion experts and physicians agree, soccer players should practice heading with a lightweight ball to reduce the impact while training the skill. A study by Radiological Society of North America has shown that there is a threshold level of heading with a regular ball where players who did heading of amounts lower than the threshold were unlikely to show these brain injury-like changes, and the ones that exceeded the threshold were much more likely to show these cognitive symptoms. The study finds that that threshold ranges from about 1,000 to 1,500 hits over a year, depending on what part of the head takes the force of the ball - To ensure the number of sub concussive impacts stays below this threshold, players and coaches should be using a lightweight ball such as the Heading Trainer to train proper heading technique.