These are by no means mandatory, and whether you do all of them or none of them, the end result of the attunement will be the same. The only difference is that by doing some or all of the following, you may heighten the experience during the attunement and possibly aid in lessening the chances of experiencing a period of detox as a result of the attunement. If you smoke use any type of tobacco product, cut back as much as possible on the day of the attunement. If at all possible, do not use them at all on the day of the attunement. Cut back on drinking any caffeinated beverages in the days prior to the attunement, and completely on the day of the attunement.
Caffeine tends to throw the nervous and endocrine systems out of balance.
Caffeine, being a stimulant, causes peoples minds to wander and keeps them from being able to hold their focus for long periods of time. Spend time alone. Go for walks out in nature. Refrain as much as possible from eating any meat, fish, or fowl in the days prior to the attunement. Because of this, they slow down the rest of the bodies systems.