Chris Pine: Buff Biceps on Juicy Jog!

Chris Pine shows off his killer arms in a baby blue tank top while out for a jog on Thursday (August 16) in Los Angeles.

The 31-year-old Star Trek actor cooled off after his jog by picking up a couple cups of juice from a local shop.

PHOTOS: Check out the latest pics of Chris Pine

Keira Knightley has reportedly landed the lead female role opposite Chris in the upcoming Jack Ryan reboot after being the frontrunner amongst a host of young actresses.

10+ pictures inside of Chris Pine on a jog…