Starfield:Gymnastics

Gymnastics is unlocked by spending a total of 4 skill points in the Physical skill tree.

Gymnastics provides various benefits to maneuvering. The first tier lets you combat slide and take less damage from falls. The second tier makes you move faster in Zero-G conditions, and receive even less fall damage. Tier three improves your stability while firing in Zero-G, further reduces fall damage, and allows you to regain oxygen while mantling. The final tier increases your jump height permanently, as well as increasing your running speed after a combat slide or mantling.

Skill Increases
The first rank is simple enough in that it just requires you to take 100 fall damage, but the other ranks may be slightly harder.