Goat spleen boosts energy and is good for improving hemoglobin content

Summary: 

1. Tamilians have been preparing goat spleen as a tradition. 

"During childhood, my mom force to have this because of its health benefits", 

"my mom use to prepare this very often"

2. Spleen:

Boosts energy

Helps in improving hemoglobin content (Note: Low hemoglobin content leads to fatigue / low energy and other ailments listed below as per NY Times article)

"Tired Blood"

by Jessica Kourkounis for The New York Times

Thanks to advertisements for the once-popular tonic Geritol, most people of a certain age know about “tired blood,” a disorder more accurately called anemia, involving a shortage of healthy red blood cells to carry oxygen to body tissues and cleanse them of carbon dioxide.

It is not really the blood of people with anemia that is “tired.” Rather, it is anemic people themselves who commonly experience chronic fatigue. 

Other symptoms may include 
1. weakness, 
2. shortness of breath, 
3. impaired athletic performance, 
4. rapid heartbeat, 
5. irritability, 
6. apathy, 
7. dizziness, 
8. pale skin, 
9. headache 
10. numb or cold hands and feet. 

But in many people the symptoms are too mild to be recognized, and the anemia goes undetected for years.

https://madraasi.com/2015/10/06/goat-spleen-stir-fry-manneral-vathakkal/

http://www.nytimes.com/ref/health/healthguide/esn-anemia-ess.html?pagewanted=all