Iron Man 1 -

You don't need to be fast every day. 80% of your training should be low-intensity to build a durable engine.

On race day, when you hit mile 18 of the marathon, your "why" is what keeps you moving. Iron Man 1

Whether you're doing a full MCU rewatch or seeing it for the first time, Iron Man remains a masterclass in blockbuster storytelling. Don't forget to stay for the post-credits scene—the one that changed movies forever! Option 2: The Triathlon (Alternative Intent) You don't need to be fast every day