20 mm
286 words
an od
Until nx
yiug im Engsh: *1aughter is the bes
Fenly few people took the sa
Now. however, doctors have pem o
en the human body. They he
aughter really can improve peoples health.
Tests were done to study the cffects of laughter on the body
Teople watched funny flms。 while doctors checked their hear
rate。 blood pre
IE ve
breathing and ms It was found thal
ar effects to ( 3 ). It ince
pressure、the heart rate and the rate of breathing: it also works
several groups of muscles in the face。 the stomach, and cven the
feel IT laughter exercises the body, it must be ben
Oiher tests have shown that laughter appears to be capable ot
( 4 ) the effect of pain on the body. In one expenmecnt
who listened tos
laughter has sim
es blood