It is likely because you are clearing negative energies, curses, bindings, hatred, ill will, thoughtforms, and destructive forces from your soul. This process can feel heavy and draining. I remember when I first began working on purifying my soul - I felt utterly depleted and exhausted. Your body needs rest during this time, but it will gradually adjust. Over time, you’ll begin to feel lighter, brighter, and filled with renewed energy! Just keep at it.