It hasn't even been a week since Lindsey Vonn broke her arm and underwent emergency surgery ... and she's already got her ass back in the gym.
The Olympic skier hit the exercise bike over the weekend -- while trying to balance a weighted staff with the right arm she snapped during a ski crash on Thursday.
Vonn had a plate and screws put in her arm during surgery -- and now she's rocking a cool black sleeve and brace while it heals up.
#NoDaysOff
