Never deprive yourself of sleep. Sleep is a must. In this hustle and bustle of life, your body needs maximum rest. It is very important to heal your body after a hectic day of work.
There are a lot of physical effects of sleep deprivation... The most common of them all is Exhaustion: The fact is that you will not only feel  "tired", but will get physically and mentally exhausted. If you will get exhausted, then no matter what kind of task you do and how small it is, it will seem to drain you of all your energy. Rather than completing the task, you would be more than happy just to lay on your bed for hours and hours. You'll surely get to know about this situation of yours when you are constantly tired day in and day out. So never deprive yourself from sleep.

The next most common physical effect that can be faced by in the case of sleep deprivation is discomfort: you will surely not feel any kind of pain but will get more of a dull feeling all over your body. The fact is that there is no remedy for discomfort and nothing really helps to relieve the discomfort; even sitting or lying  down doesn't help.

The third most common physical effect is Blurred Vision: it is not an uncommon activity for your vision to blur for short periods of time. It all happens because of restless sleep. These brief moments of "haziness" does not mean that you are going to get blind at all; it just means you you are facing from this condition called sleep deprivation.

The fourth effect is Disability to react to certain situation: you tend to do every task in a slow motion and to add on more difficulty, you fail to react to situations as quickly as you normally would.
In order to get over the situation of sleep deprivation, you can implement the following things in your daily routine:

• Take a bath 20 minutes before bed. Prefer warm water.
• Have a glass of warm milk before going to sleep. This will further help you in calming down the nerves.
• Remove all the tensions from your mind. Don't think about anything.