Kill all the cockroaches in your house is a good practice for your body emotionally and physically. I can say it is a good stress re-leaver. Your negative energy will be gone. And off course it helps your body to be fit. Go to your house, to your room, to your cabinet, find it and enjoy yourself KILLING cockroaches. Go ! Go go go go .. Hi my name is Raymond and I'm a scientist. I study about cockroaches.