Sleep to me is a form of relief and escape. Instead of using alcohol to forget worries or drugs for headache you can use sleep to get rid of them because, when you are asleep you are unaware of your surroundings and your worries too.
Sleep brings dreams, most times beautiful, calming and what you desire or what would make you happy but, a dreamless sleep is the best.
It is said that most healthy adults need 7-9hours of sleep to function properly but sadly it isn’t so these days. You see people keeping late nights and only get like 4hrs of sleep before they have to work or resume their daily activities the following day.
Lack of sleep can cause depression, crankiness and some other psychological stuff likewise being startled awake from sleep. This is why waking people up from sleep is not advisable, some can go mad when you startle them awake, some can go into shock, some can get violent and other things
Not everyone can cope with lack of sleep but some cope by taking short naps, some by taking caffeine(regular or too much intake of caffeine is bad for the health).
So it’s advisable to let them wake up themselves
Also waking up during the night time once or twice is normal.
But waking up frequently is not normal

In addition to being a great pleasure, sleeping well has very positive effects on our body. These are the 6 that specialists consider most beneficial.

Increase creativity

When the brain is rested and hormone production is balanced, memory works perfectly. That makes the imagination more powerful and we more creative.

Helps lose weight

Lack of sleep causes adipocytes (fat cells) to release less leptin, the appetite-suppressing hormone. Insomnia also causes the stomach to release more ghrelin (the appetite hormone). Both actions make sleeping too little be associated with obesity.

Makes you healthier

Our immune system uses sleep time to regenerate, allowing it to effectively fight against toxins and germs that continually threaten us. With a weak immune system, we have much less chance of successfully overcoming infections.

Improves memory

Sleeping strengthens neural connections. During the REM phase of sleep, the hippocampus, the storehouse of our memory, is restored, transforming short-term memory into long-term memory. At the University of Hafi (Israel) this has been corroborated with the results of a study that states that a 90-minute mid-afternoon nap helps to fix memories and dexterity.

Protect the heart

A recent study published in the European Heart Journal states that insomniacs are three times more likely to suffer heart failure than those who sleep soundly. Insomnia increases blood levels of stress hormones, which increases blood pressure and heart rate. Other studies also link insomnia to having the highest cholesterol.

Reduces depression

When we sleep, the body relaxes and this facilitates the production of melanin and serotonin. These hormones counteract the effects of stress hormones (adrenaline and cortisol) and help us to be happier and emotionally stronger. On the contrary, lack of sleep causes an increased and sustained release of stress hormones.