California, see link
Your question can not be answered - the stress of what what? Stress means "A state of extreme difficulty, pressure, or strain"
Probably from themeselves.
Stress can be considered both a physiological and psychological response to challenging or threatening situations. While there is a mental component to stress, it also involves physical changes in the body such as increased heart rate and release of stress hormones. Therefore, stress can be seen as a combination of mental and physical factors.
Solid
The lower lumbar vertebrae are the most stress bearing vertebrae.
When you have stress you also have strain - stress cannot exist without strain, so they come at the same time You can have strain without stress - like expanding something under temperature in a free state. If the state is not free, then you have stress occurring at the same time.
limit state method
The stressed syllable is the syllable that is emphasized when it is spoken. Some words have more than one stressed syllable, so the primary stress is the most emphasized syllable, the secondary stress is the second most emphasized, and the tertiary stress is the third most emphasized.
The only stress free state is death. Stress is a vital part of life, and the important thing is not to avoid it, but to manage it properly.
Normal fault forms tension stress. It is a stress state wherein a body of material is being stretched or expanded.
Shear Stress.
ANXIETY : a state of nervousness, worry, or stress