One of the reasons that the NFLPA pushed so hard to structure training camp in such a way that it allows for a gradual ramp-up period of conditioning work, followed by light practices, before working up to full-contact padded practices, was a concern about an increase in the rate of injuries as a result of the lack of physical activity players will have experienced this offseason because of the pandemic.
With the first day of padded practices, however, we already saw a number of injuries flood the NFL news wire, including some very significant in terms of their longevity.