Any good action hero worth his salt knows how to deal with an explosion: never look at it, jump in the air exactly when it happens and then get up and keep running. It doesn’t matter that the shockwave was strong enough to shatter buildings, cars, and other heavy stuff. When it comes to the human body, all an explosion does is propel the hero forward in slow motion.
As you might expect, in real life, that same shockwave would tear our hero to pieces. Even if his body remains intact, the shockwave doesn’t push him forward, it goes through him. This alone is usually enough to stop his heart.