Hi Doggiedo... I can tell you from experience that my days would be good, then as evening approached I would just become exhausted. I thought it was just normal. Married with kids, work hard all day, repeat, repeat... At 43 I was diagnosed with ADD and my life after diagnosis is Much better. My brain never had enough dopamine, it was great early in the day but just did not have the staying power.

You may have discovered a key, though... Exercise causes your brain to produce dopamine which can really improve your mood

My life after Adderall treatment is greatly improved. I can tell a huge difference when I exercise too.