Before completion: Learn to glide with such efficiency that you no longer use endurance to stay up in the air, only to perform lean techniques.
After completion: You can now glide indefinitely without using endurance. Leaning still drains endurance.
— In-game description
- Endurance will regenerate in flight if you aren't leaning.
- Running out of endurance (due to using lean techniques) will no longer force you out of flight.