 Just because you don't feel the headache and it doles it away that you can still function and go to the music festival or go shopping or pull the weeds out of the garden does not negate the fact that you still have a problem that's causing a headache. Just because you can't feel it doesn't mean it's longer there. This is why I always warn patients after I actually adjust them for the first time. I'm like, hey, you might be sore. Similar to working out. A really good workout, soreness, etc.,