Purring (the sound the cat makes while she sleeps)
doctor jean eve , a french veteran ,says that hearing the cat's purring while she's asleep activates the brain's cells and motivates the secretion of serotonin (the hormone of happiness) and endorphin to improve the mood .
elisa peatvon the president of the institute of sounds says :
the frequencies that the cat makes from 20 to 140 hertz helps in the growth of bones and healing from fractures decreases pains and problems with breathing,,getting rid of negative energy and depression
cats turns our negative energy into a positive energy.