Bryant's first tweet was at 11:09 a.m., "Merry Christmas! Enjoy the ones you love #countonfamily," which included a photo of Bryant with his family.
After Tuesday's win over the New York Knicks, Bryant wrote "14-14 not great but we are getting better. It's all about the journey #countonchallenges."
He also posted pictures of his late-night 20-minute ice bath, noting that "the hardest part is getting over the first [two minutes]."
Bryant will apparently use the Nike account for a few days -- noting, "So yes I'm finally tweeting!! Mamba out."ALSO: