When it comes to building an off-the-field career, there's no time like the present for NFL players to start, as the league, the players association and the sports-tech industry have collectively generated more opportunities than ever before. Experiences - and even their biometric data - count as a valuable, marketable asset.

The list of resources for players and alums includes learning from spring football leagues, teaming with sports accelerators who seek experience to hone their wares, attending profession-specific boot camps co-created by the NFL, and tapping resources created by partnerships struck by the NFL Players Association.

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