What decides how deep someone's sleep would be?

A small study, published in 2010 in Current Biology, suggests that differences in how sleeping people respond to noise may be related to levels of brain activity called sleep spindles. The researchers found that people whose brains produced the most of these high-frequency sleep spindles were more likely to sleep through loud noises. But more research is needed to confirm the results

It's hard to generalize about what makes some people light sleepers and others heavy sleepers. It might be some sort of genetics, or it might be that some people have a greater degree of arousal over a 24-hour cycle.

In most cases, however, factors under your own control affect the quality of sleep you get. There are lots of issues related to lifestyle, medication, alcohol, and caffeine that can lighten sleep. People might also not be getting enough sleep because they're not spending enough time in bed due to the choices they make.

Practicing healthy sleep habits - maintaining a regular sleep schedule; limiting caffeine and alcohol use; and sleeping in a quiet, dark, and cool space - can all help foster deeper, heavier sleep.

Having said all this, being a heavy sleeper or a light sleeper has nothing to do with the quality of your sleep. Hope this helps.
Engagement (marriage): How do I get my parents to approve of the man I wish to marry?

The thing about parents, and I have two so I know this stuff, is that they like to believe that anything they say or do, was their idea.You need to be aware that if you present them with a 'fait accompli' they will likely reel in shock.Don't try to 'make' them like him

What is piles (haemorrhoids)?

Now a days when people are getting inclined towards spicy food we have seen a large no. Of Cases where people suffer from problems likes piles, hemorroids, fissure. In the above mentioned problems the person experiences extreme pain during bowl movements and also while

Can a Muslim boy marry a Hindu girl in Islam?

No. Muslim men are only allowed to marry chaste women from the People of the Book i.e. Jews and Christians, while the woman continues to follow her religion.But other than that marriage with a polytheist is a strict no, no, a thousand times no. You should realize that the key to Islam is belief in One