I go to put dumbbell back up on the rack, the rack has numbers on it associated with weight. I can't put mine in the right spot because it is out of order so I double back to fix the weights. I didn't notice a guy behind me and he throws his weight on the ground, in frustration of having to wait for me. The space between the dumbbell rack and bolted down benches is only enough room for one person. He's super huge and he's holding 25 lb weights, however his muscles could be at exhaustion. This all happened barely out of the reach of my wingspan probably 10 -12ft. Probably happened in about 10 seconds.