Seem to feel spaced out a lot of times lately, mentally tired, not clear/fast, but clumsy. Chemical (i take m.Vitamin b4 bed)? Psychological? Any ideas?

Blood sugar problems. Low blood sugar can contribute to you feeling "spaced out". You may be suffering from intermittant episodes of low blood sugar without knowing it. Low blood sugar problems are almost always caused by low fat, high card/high sugar diets. Other symptoms of low blood sugar can include palpitations, sweating, anxiety and extreme hunger.