OUR HEART THAT NEVER TIRES
For us, our heart is an essential organ.
It beats about seventy-two times per minute
and about for ty mi l l i on t imes per year . To
understand what a tiring activity this is, just
make a f i s t wi th your hand and then re l ax i t , and
con t i nue mak i ng a f i s t and r e l ax i ng i t . How many
minutes do you think you wi l l be able to keep this up?
Your heart , whi ch i s about the s i ze of your f i st ,
cont i nues th i s ac t i on throughout your l i fe wi thout
be c omi ng t i r ed o r e v en s t opp i ng onc e . Ou r hea r t s
don ’ t s top even wh i l e we are as l eep . I f we become
exc i ted, our heart beats faster , and i t beats s lower
whi le we rest . Our heart makes al l these adjustments
automatical ly whi le we are total ly unaware.
Every time our heart beats, it pumps blood around
our bodies. What we need to survive is in this blood.
Every one of our cel ls receives the necessary oxygen
and food they need from the blood. Our heart pumps
about 43,000 l itres (approx. 11,000 gal lons) of blood
pe r day . Do you know j u s t how mu c h b l ood t h i s
means? This is about enough to fi l l 150 bathtubs .
Wou l dn ’ t you be c ome t i r ed i f you t r i ed t o
empty a single bathtub ful l of
water wi th just a cup? Now
imag i ne hav i ng t o emp t y
150 ba t h t ub s o f wa t e r
wi th just a s ingl e cup.
Probably you wouldn’ t
hav e be en ab l e t o
a c c omp l i s h s u c h a
d i f f i c u l t
t a s k .
Howe v e r , ou r hea r t
do e s s u c h a t a s k
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