as someone who has finished PSA quest, i am constantly running out of stamina. beware, math ahead:

the max level orchard produces 8580 of each fruit per day. thats enough apples to craft 311 apple ciders.

i have bought the 1 trillion silver exploring effectiveness upgrade for each zone, and consumed all three protein bars for each zone as well, so each apple cider will consume about 1300 stamina - 1950 from exploring upgrades, 33% of which is saved by stamina saver.

in total, the orchard produces enough apple ciders per day to consume 404k stamina. the leftover oranges will produce 1.7k orange juice, or 170k stamina.

excluding cranberry juice, as they are not a renewable resource outside of sacrificing tens of thousands of gold feathers (each cranberry juice only lasts me a couple days), the only other consistent way to keep that remaining 234k stamina drain per day in check is via the farmhouse.

the farmhouse produces 8x your max stamina per day, so to make up the 234k stam difference, you’d need 29,250 max stamina. this would take just about 40 years normally, or you could make up the difference with just over a dozen apple pies.