gut有“内脏”“直觉”的意思，go with one's gut 凭直觉走 。

【例句】
Just go with your gut.
就凭着你的直觉走吧。

You could flip a coin, but you could also just go with your gut reaction.
你可以扔硬币决定，但也可以跟随你的本能感觉。