when himawari touched naruto when her byakugan was activeated, why did it knock him out?
In the Naruto series, Himawari's ability to activate her Byakugan is not directly responsible for knocking Naruto out. The reason Naruto was knocked out in that particular instance is because Himawari's blow accidentally hit one of Naruto's "chakra points," which are vital energy points in the body that regulate the flow and control of chakra.
When a chakra point is hit or disrupted, it can lead to a loss of consciousness or other effects. In Himawari's case, she unknowingly struck Naruto's pressure point, causing him to collapse. It should be noted that the Byakugan enhances the user's vision and ability to see these pressure points, but the activation of the Byakugan itself does not have a direct influence on Naruto's knock-out.