torah study - What are you supposed to do on Tisha baAv?

On Tisha baAv you can't

1. 
   

   eat

   
   
   


2. 
   

   wash oneself

   
   


3. 
   

   anoint oneself

   
   


4. 
   

   marital relation

   
   



5. 
   

   wearing leather shoes

   
   


6. 
   

   sit on a chair

   
   


7. 
   

   Torah study

   
   


8. 
   
   

   greeting people with a blessing

   
   


9. 
   

   conducting business

   
   


10. 
    

    going on a pleasure trip. etc.

    
    

So my question is, what are you supposed (or what do people) do for 25 Hours. Besides maybe 3-5 hours of davening and 8-9 hours of sleep coming out to about 13 hours of...

Answer

There are a variety of things that people do on Tisha B'Av. Many people spend most of the morning reading and discussing the Kinnos. It is also permitted and widespread to learn certain bits of Torah that are relevant to Tisha B'Av. These include Eicha, Iyov, the story of the destruction of the Temple which is related in Gittin 56b-58a and Sanhedrin 104, the third perek of Moed Katan which discusses mourning, as well as the halachot of Tisha B'Av, fasting, and mourning.

According to Chabad.org, "Many communities have the custom to clean the house and wash the floors after midday, in anticipation of the Redemption which we await."