Shortly after purchasing the mats and before officially opening the doors to CrossFit Goose Creek, a gym owner from Nashville who was in a similar situation came over to witness the test. “I was slamming a 135-pound barbell as hard as I possibly could from overhead,” Gray said, and the other gym owner said the sound was barely audible. “We’ve been crashing weights on it for almost a month now, and I’ve been talking with my neighbors. They’re like, ‘We don’t hear anything,’”
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