In a recent study, researchers from California State University showed that the self control needed to suppress the urge to urinate can make you more convincing at telling lies. This effect is known as inhibitory spillover effect. – WTF Fun Facts
inhibitory spillover effect
studies show you are a better liar when you have a
Studies show you are a better liar when you have a full bladder. It is believed this is a result of the inhibitory spillover effect. If you are already using one type of self-control, it’s easier to be self-controlled at other things but only when doing those things simultaneously.
Source: https://www.popsci.com/you-may-be-better-liar-when-your-bladder-is-full