Resistance because how long u last running depends on ur breathing issue
Mental and emotional you need to be a genuine good person
This helps because everyone will be able to afford health care and they will be able to know what sicknesses they have because many poor people have no money to buy what they need or to get a check up
Some of the reasons can be:
If you're a pre-teen or a teenager who has only started menstruating, you may find that it takes a while for your period to settle in and become regular.
I couldn't think of anything else, but hope this helped enough!
To find the best answer, ask your mom!
~Aurora