Hey I know a trick to replenish Stamina

Go to settings go to date and time, what you want to do is chose the one at the end or chose Jerusalem that time zone. Depends on device. This replenishes daily challenges and stamina ask more questions. Enjoy:)

Must change the time in options ? What options?

I did that already but it seems that the time for my stamina to regen took a lot longer than usual. I don't if it's worth trying to change the time and date again.