You can spend stamina at different rates so that you can maximize your combat output per day. The different stamina spends: are 40/80/120/160/200, but the maximum amount you can spend per day is 280.
There is an advantage and disadvantage in performing a lesser number of fights per day (using more stamina in a fight).
- Advantage: Less time to fight per character. (i.e. use 200 stamina per fight. )
- Disadvantage: For example, if you lose a 200 stamina fight you will lose more than what you would do if you did 7 fights of 40 stamina.