Answer: It's because he/she is constantly subjecting their legs to gravity, which veins are fighting against to move blood back to the heart.
Answer:
this is for #3
Explanation:
Put the xs on both thighs just below the waste but above the knees
There are many different systems involved in when we exercise, the three main ones are the Respiratory system which is involved in breathing the circulatory system which is about circulation of blood around the body and finally the muscular system and finally the Muscular system which is about how we move.
Explanation:
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