Exercise intolerance is experienced when you have breathing difficulties after
a
short period of
exercise. When oxygen
fails to get circulated in your body, you tire easily and can no longer tolerate movement. If
you are unfit and
unhealthy, you can have signs of exercise intolerance.
Exercise intolerance can be triggered by muscles that involve the breaking down of glucose into
energy, failing to
perform as they should.
Exercise intolerance can also develop when the airways (tubes that carry air in and out of your
lungs) of your lungs
become narrower than usual. This blocks the flow of air in and out of your lungs, causing you to
tire quickly.
Muscle fiber failure. Muscle fibers in your body may fail to function correctly due to an
underlying defect in the cells
that convert food into energy. Your body relies on hundreds of these energy-conversion cells. If
there is poor
coordination of the same, you will be less energetic.
Injuries. Injuries or disorders of your muscles, nerves, tendons, joints, cartilage, and spinal
discs may also lead to
exercise intolerance.
