Report Abuse. 1  Fastest time to run a mile is around 4 minutes. 2  The average time to walk a mile is 12 minutes, so half a mile would be 6 minutes. 3  well the average human walks at 3 mph so thats a mile every 20 mins and half a mile every 10 mins.  i walk a mile every morning in 15-20 minutes, so probably 10 minutes.
Coronary heart disease (CHD), also called coronary artery disease, occurs when plaque builds up in the coronary arteries. These arteries supply oxygen-rich blood to your heart. Plaque narrows the coronary arteries and reduces blood flow to your heart muscle.
The cells responsible for creating calcium build-up in vessel walls - resulting in heart disease - have now been identified in a new study published in PLOS Biology. Atherosclerosis - or hardening of the arteries - is the main cause of heart disease. It occurs because of calcium build-up in the blood vessels - resulting in hard and narrow arteries. This then leads to problems such as blood flow obstruction and heart issues. Several factors have been known to contribute to the risk of atherosclerosis, however, the cause is not yet known and as of now there is no way to change it once it occurs.