You have to really hug the person you are holding. You have to make him or her very real in your arms, not just for the sake of appearances, patting him on the back to pretend you are there, but breathing consciously and hugging with all your body, spirit, and heart.
When we hug, our hearts connect and we know that we are not separate beings.
During the first in-breath and out-breath, become aware that you and your beloved are both alive; with the second in-breath and out-breath, think of where you will both be three hundred years from now; and with the third in-breath and out-breath, be aware of how precious it is that you are both still alive.
– Thich Nhat Hanh, via brainpickings article (as per usual)