Tim Allen. This is the latest accepted revision, reviewed on 7 April 2017. For those of the same or a similar name, see Timothy Allen (disambiguation). Timothy Allen Dick (born June 13, 1953), known professionally as Tim Allen, is an American actor, comedian and author.
Not necessarily. Some of the symptoms of low oxygen can be shortness of breath, fast heart rate, changes in the color of the lips and fingernails, but some people will have a low oxygen level without experiencing any of these symptoms. Others may experience these symptoms without having a low oxygen level.
Oxygen is a gas that you canât see, taste, or smell, but it is in the air all around us. Everyone needs oxygen in order to live. The amount of oxygen in the air is always 21 percent. This is enough for people whose heart and lungs work normally. A person with heart or lung problems may benefit from breathing air with more oxygen.