Under the assumption that demigods exist, I would think that they do. Demigods are meant to have superhuman features. Strength is one of the more common ones. If you have a strong, fit body, you are more likely to live a long life than someone that is overweight, out of shape, etc.
No
Humans live longer.
no humans are cool
157,897,654 % impossible
Their slow lifestyle.
Humans need to eat lean protein, fruit and vegetables in order to live longer lives. Most experts agree that sugar and milk products contribute to disease.
In some cases yes, not all cases though. Lately they have been known NOT to live longer than human beings.
Not really, its kind of the same but maybe you live shorter with an animals organ?
In some cases yes, not all cases though. Lately they have been known NOT to live longer than human beings.
70 years, almost as long as humans
no it does not have demigods.
clean the air and make humans live longer