As happy as I am with this, I would really like to see the impact of sleep on the mood a full day later, instead of just the mood that morning. There's a differ

As happy as I am with this, I would really like to see the impact of sleep on the mood a full day later, instead of just the mood that morning. There's a difference between waking up unhappy and consistently being unhappy. Of course you do have to watch out for correlation vs causation, but the full day gap would partially reduce that effect I would think. Still not scientifically cause + effect, but oh well.