Caffeine. Both. It can help me get into "auto-pilot" which is either good when I am efficient or bad when I am procrastinating. Sugar. Bad. Hurts your attent

Caffeine. Both. It can help me get into "auto-pilot" which is either good when I am efficient or bad when I am procrastinating. Sugar. Bad. Hurts your attention span when you're on a "high" and hurts your motivation when you're on a "low."