The healthiest way to sleep is on your back.
A calorie is a unit that is used to measure energy. Hope this helps!
Negative effects of Vitamin k are-
1)Muscle stiffness
2)Less movement/activity
3)Difficulty in breathing
4)Paleness
5)Yellow eyes/skin
At the least, once a year.
This can vary between people with certain partners and such. You should test before symptoms appear because usually, once symptoms appear, it is too late to be cured or treated.
Every six months can be frequented and sometimes preferred but is not required. Once a year is the least a person could do to test for STD's.
Hope this helps!
Disease that develops and continues over a long period of time is a a.Chronic disease.