Physiological age is the number of years a person have been alive.

Physiological age is the number of years a person have been alive.
-False

Physiological age can also be known as biological age. Biological age is the relation of your brain and function of your other organs according to your calendar age. Example: one man is 59 years old and has taken care of himself, he has no hear problems and only a small reduction of kidney function. Very good health for his age, in contrast a 22 year old with liver, heart and kidney failure due to a genetic disorder. The 22 year old would have an older biological age than the 59 year old even though calendar wise the 59 year old was born long before the 22 year old. The answer is false.

Because without physical activity, the body has extra "energy" if you will, and so when it is time for bed you are not tired, so you end up staying up all night. also there is probably an effect on your internal clock, which messes with your melatonin production which goes hand in hand with your sleep cycle