When talking about interpretting emotions it depends on how well you know the person. If they a "day-one negroid" then you could interpet all emotions. assuming your not fake. However if thy just sus negroid happiness would be the easiest. just look for a smile:) hope this helps!!! have a gr8 day.
Poor health and decreased appetite
It depends on the indicator type; typically if it is darker in some way, it is positive
Workout lift weights push-ups pull ups any thing that has to do with arm movements and muscles make sure you stretch and you sleep 8 hours to build muscles mass