The 35-year-old is still recovering from a torn Achilles that he suffered last season, and it is unclear when he will be able to return to the court.
"I was cranking it up the entire time I was in China," said Bryant, according to ESPN.
"I've scaled back since, just to let it heal up a little bit more and get a little bit more flexibility to it. But it feels good just to run and break a sweat by running."
Bryant also insisted that he needs no extra motivation from critics and is confident that he can return to the same standard he played at prior to sustaining the injury.