It's been well documented that both of those having a good diet, a less stressful environment can have a positive impact on our immune system.
Zvakaonekwa nekunyorwa kuti kuva nezvekudya zvakanaka, kugara munharaunda isina kushungurudzwa kwepfungwa zvinogona kuva nezvakanaka zvazvinoita kumasoja anochengetedza nekurwira miviri yedu kubva kuzvirwere.