Numb sensations in the body

Numbness is caused due to irregular blood flow. For example, the numbness you feel in your fingers after having written for long hours, or when your arm doesn’t move due to pressure created on it after waking up in the morning. The nerves lack free flow of oxygen and renders the numbness.

The spot seems to have lost the ability of movement

Sitting or resting your body in a particular position, causes this feeling to occur. The spot seems to have become lifeless due to increased compression on the particular spot for long hours. This relieves after sometime when you try create movement. However, if such sleep mode of a body part arises suddenly, it is necessary to visit a doctor as there can be signs of nerve damage.