After the purge (throwing up - sometimes the other end comes a bit later) and a little time relaxing for recovery, benefits can often be felt the same day.
They can be hard to explain, and might sound a bit woo woo, when hearing another's description.
You might feel lighter. I often felt like I was somehow resonating on a higher frequency. More empathetic and sharp.
Another way of describing that would be as just feeling more energetic and positive.
Afterwards, I've often had more vivid dreams.