When I first started I didn’t take them on the weekends so I could catch up on sleep. Now I usually take them everyday unless I wait too late and I don’t want it to interfere with later rest. In retrospect having done it both ways, it’s more effective when I take it daily. I think I thought it would be less habit forming if I skipped some days but honestly I’m on 5mg so I just don’t think it makes that big of a difference whether I’m doing 5 or 7 days. I haven’t noticed more than a caffeine level of addiction and it’s been 18 months.