I am going to start a 9 day SD and I want to start creatine as well. Should I start loading up now for the 4 days or should I wait unitl I resume lifting a week from Saturday and then start taking the creatine?
You could start now. Since you won't be lifting, I don't think there is a need for a 'loading phase.' Just start taking the normal daily dosage, you'll likely be saturated by the time you begin lifting.
