Explain different diciplnes which takes place in track event only

There are many disciplines which are to be followed in track event. Sprint event, running event, jumps test all these have different disciplines.

Explanation:

The men and women games often have different disciplines. The track event has a 500 meter or long race in which there are certain rules which needs to be followed to be in the tournament. There can be hurdle race which has more rules to be followed and any deviation from these rules may lead to disqualification.

the aorta is the large artery leaving the heart branches into smaller arteries, which eventually branch into capillaries.the arteries carry oxygen and nutrients away from your heart, to your body's tissues. the capillaries are small, thin blood vessels that connect the arteries and the veins. the statement that arteries carry oxygen-rich blood to capillaries is true. veins on the other hand are blood vessels that take oxygen-poor blood back to the heart.

you may having too much sleep.. a good night sleep consists of about 7 hours. more than that could be the reason you're still tired throughout the day.