..strengthen immune system beforehand...
Learning about alkaline vs acid states for our own bodies would be helpful.
And alkaline vs more acidic foods.
Also alkaline vs acid water. Alkaline water >7 pH. Read the labels on water bottles and learn the definitions for some water bottles do not list pH, but one can figure it out by looking at the label usually.
When we are born - 80%+ water...blood is 80% water.
But we are all living in a state of dehydration...a figure thrown around is adults are 2/3 - 66% water. That's quite a drop!
-- Don't wear sunglasses (Nor UV blocking contact lenses) either before hand, ever......we need the UV light to kills viruses and bacteria in our body...UV light healthy for us when we understand how it works. Don't believe the anti-UV hype...
Look up a product -- STERIPEN to see how it works in a consumer product.