He who finds joy within himself discovers that his body is charged with electric current, life energy, not from food but from God….A genuine smile distributes the cosmic current, prana, to every body cell. The happy man is less subject to disease, for happiness actually attracts into the body a greater supply of the universal life energy.
This can be very easily misconstrued into thinking that laughing is healing
As I understand what he refers to is the joy of divine consciousness by itself us healing. Just reading jokes, laughing at each other, making fun , watching funny movies may make you feel good. And even be healthy BUT
The is something much much deeper and that is divine joy
Unless you have tasted it, unless you are imbibed in it regularly, you imagination has no wings to take you there and hence this whole subject will elude you
That joy, once one has it , every breath is full of immense joy. It may not last. But it gives you proof. You can be in the harshest circumstances but the joy will be there.
And some misunderstood it as sohum kriya. Or hungso kriya as taught in SRF. In my opinion that starts after divine realization. Not before. People try to discover God through it – but for that a Guru has to open up a secret within the breath