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It should never be difficult to breathe when doing cardiovascular activities. You should be breathing deeper and more rapidly. If that is the reason, it's because your heart requires more oxygen to unlock the potential energy in your body. If by difficult you mean it hurts, you should consult a medical professional.
What else can I help you with?
Why do shark sink when they die?
because sharks have to swim to breath so if they dont swim then they dont breath causeing them to sink and die. because sharks have to swim to breath so if they dont swim then they dont breath causeing them to sink and die.
What level of physical activity is required for becoming a pediatrician?
There Is None. You DONT need any physical activity to be a pediatriction. it is told to say you need about 60 minutes a day,just to stay healthy.(: Hope i helped.
Why do some shark die when they sink?
because sharks have to swim to breath so if they dont swim then they dont breath causeing them to sink and die. because sharks have to swim to breath so if they dont swim then they dont breath causeing them to sink and die.
What happens to you if you don't do physical activity?
you get fat and sit on the couch and dont get out and get a girlfriend or boyfriend lazy bums
How does a scarlet macaw breath?
they dont
How do walking sticks breath?
they dont
Do dogs breath when they run?
Of course dogs breathe when they run! they dont hold their breath!
How do humans breath under water?
we dont
What happens if you breathe?
if you dont breath then you die
When do your muscles need to respire faster?
your muscle dont respire, your heart and lungs need to respire more whilst taking part in a physical activity.
How does whale breathe inside water?
they dont breath in water they have to keeep on coming out of the water to breath
Do you use carbon to breathe?
we breath out carbon dixocide but we dont use carbon to breath trees do
