Starfield:Weight Lifting

Weight Lifting is automatically unlocked and can already be learned by using a skill point to learn it.

Weight Lifting increases your maximum encumbrance. The highest level also gives you resistance to stagger.

Backgrounds
This skill is automatically learned with the following backgrounds:
 * Homesteader
 * Long Hauler

Skill Increases
As the challenge describes, simply go near your maximum capacity, and sprint. Preferably do this in a large space when it will be easy to keep sprinting.

These skill challenges can potentially be increased concurrently with some other skills, such as the Fitness challenges.