 it understands and it knows the job that needs to be done you don't have to think about it now one of the things we really promote as you know is drinking plenty of water hydration is key with this patch because there will be toxins eliminated from the body as there should be but hydration is going to be key and about half your body weight ounces of water a day is adequate hydration and i mean water you know other things you can have but at least half your body weight ounces of water a day at a minimum especially in this hot sun you might want to