Thor is full-body strength with a mythic pacing: legs to push, calves to spring, upper body to brace, then holds that dare your trunk to stay unbothered. The transitions feel like climbing from ground work to standing work and back again, which is exactly why it builds real-world strength. Lower-body patterns warm the joints and load the big engines (glutes, quads, calves), then the plank-based section asks your shoulders and core to stabilize while you shift weight and change contact points. It’s not about speed, it’s about being solid.

The finishing holds are the hammer-drop. They strip away comfort by reducing “support” and forcing your anti-rotation system to do its job: obliques, lats, serratus, and glutes all working together to keep your torso from wobbling. Keep your hands actively pressing the floor away, shoulder blades stable, ribs tucked, and glutes on so your spine stays long. If you do that, the workout has a very specific aftertaste: steadier knees, stronger shoulders, and a trunk that feels like it’s wearing armor.