We are all, so to speak, connected in the same energy field.
The closer you are to a living object (person/animal/plant) the stronger the energy between you and the object/person.
And here comes a very important info: if you act or send a friendly message to the object/person same energy is send back to you like via a mirror. You load yourself with positive energy.
And opposite: if you are hostile towards the object/person the mirror works in the same way and send all your unfriendly energy right back to yourself.
And for your information: negative energy is what makes you sick.
So why not only receive positive energy: you decide.