If you want to gain more stam/energy, there's temporary boosts and permanent ones
For temporary.
If you go to bed completely drained(But not to the point you pass out from lack of stam), you'll get a temporary boost to both the next day.(Also gives a perma boost to vigor)
Medicines. You can buy them from reisen and eirin I believe. But if you work on foraging + mixing you can make a lot of the good ones yourself. Good for restoring stam as well.
If you have a kid thats going to school, there's a chance the teacher will praise your kid and you'll get a temp boost to the next day as well.(This one can backfire and you get lower stam/ene and a fine instead)
For permanent.
Achievements.
Combat training also permanently boosts them, the worse the conditions outside the better (So training in hail or snowstorms gives a bigger boost than normal sunny days)
If you get the impregnate 10 races achievement, every time you go to bed with 0 vigor remaining will grant a perma boost in addition to the temp one.
2hus also get more stam/ene depending on their sexual stats.
Also, the
eratohok thread is basically an era games general thread.