Feeling emptiness is called depression. When you start feeling negative continuously, and loose self control, then depression exist. You need to manage it through yoga, pranayam and meditation.
I am not going to identify the individual name but some of Cristian believes that Yoga is purely a Hindu practice. And some of Cristian followers also believe that Hindu's Master are cheating to mass.We Christians are not expected to believe or practice anything which is not mentioned or recommended in the Bible. Don't do Yoga because Bible doesn't say it is needed for the Christians.
