When you play on a server, your client sends a "Keep Alive" packet every few seconds. When you get hit, the server calculates the knockback based on:

: On major servers like Hypixel , "Anti KB" mods are strictly prohibited and will result in a permanent ban by automated anti-cheat systems.

Mastering W-tapping , S-tapping , and Block-hitting significantly reduces the knockback you take during combat.

The "Verified" builds of Mod 189 often include:

: Anti-KB mods prevent your character from taking knockback when hit by players or entities.