Ezekiel Elliott, who was diagnosed with the coronavirus 10 days ago, says that he's back to feeling "normal" but has not been cleared by doctors to work out.
The Dallas Cowboys running back said he had shortness of breath and a cough for a couple of days.
As cases of positive tests for the virus mount, Elliott said he was concerned about the safety of players, with the NFL preparing for a return to training camps in July.
"I just feel like there's a lot of moving parts that have to be figured out," Elliott said. "I just don't know how they can keep the players [healthy]. You gotta put the health of the players first.
"And it's not even so much, I would say, the players' health -- because I got corona, and it really didn't affect me much. But a lot of people have kids -- they may have kids with asthma; they may have newborn babies; their parents or grandparents may live with them. ... We have to find ways to make sure that players and their families -- and the coaches also and their families -- aren't put at risk."