A stroke, or an attack of the brain, happens when a blood vessel in the brain bursts or becomes blocked. The brain is an organ that cannot store oxygen, so blood vessels deliver oxygen through the blood. A lack of blood supply can cause a stroke, therefore causing surrounding nerve cells to be cut off from nutrients and oxygen. If the brain tissue lacks oxygen for more than three or four minutes, the tissue begins to die.
I had a heart attack. Should I do cardiac rehab therapy?
Cardiac rehabilitation programs bring education, exercise, and support for adults with heart problems.