Game Night - S1-E15
Continuity mistake: In the flashback we see Barney get handed a crumpled flyer. When we see the close up of the flier it is no longer crumpled up. (00:14:00)
Game Night - S1-E15
Continuity mistake: When Barney holds out his phone to show the video of himself with Shannon, it repeatedly switches between his left and right hands. (00:19:30)
Answer: After running the marathon for Marshall with no training, he's allowed to ride the subway for free. While sat on the train, the muscles in his legs start to seize up after the marathon to the point it is painful to move his legs. This is why he can't move them. It's the same reason your body aches after a good session at the gym the day before.
Ssiscool ★