User blog comment:Artemis Paradox/The Official Monster Hunter Wikia Help Blog/@comment-83.117.249.146-20110706105932/@comment-969093-20110708063711

Blocking or instant blocking is the thing to do when you're not able to/not certain you can dodge an attack. Like when you get slammed by tigrex, he charges you before you stand up and he will hit you 100% for sure after, then a block is useful as it keeps you from dieing.