Stamina is a stat in Salt and Sanctuary.
It is represented as a light blue bar on the GUI that refills quickly when not in use. It is primarily increased by leveling Willpower nodes in the skill tree. (Max Stamina = 30 + 10 * Willpower). All attacks, magics, and acrobatics require some amount of stamina. Actions attempted with too little stamina will be significantly slower than normal. Stamina will not refill if the player is performing most actions other than running. It replenishes quickly after 1-1.5 seconds, depending on the player's last action. The amount recovered is also dependent on equipment load percent.
The formula is: 1.50 * (1.5 - load% / 2) * 80
While blocking the last value is 15 instead of 80.
This gives a range of 120-180/sec based on weight. Each 25% change in load correlates with 15/sec.
Stamina has a special relationship with both Focus and Fatigue.
The values and the size of the Stamina bar are twice that of the Focus bar. Max stamina is also gained at twice the rate as max Focus from Willpower. Stamina's maximum value is reduce by player Fatigue, which is shown as a bar-lock stamina. This lock on Stamina is proportional to current Focus remaining and cannot drop below.