00:00San Francisco 49ers defensive lineman Alfred Collins almost passed out after making an impact play against the Los Angeles Rams that helped his team get the win 26-23.
00:11Collins, who stripped the ball from Rams running back Karen Williams, causing a decisive change in the game, had to catch his breath and using an oxygen tank.
00:21Players do so to recover more quickly between plays or after games by increasing their body's oxygen levels, which helps with muscle repair and reduces fatigue.
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