1/ Liquidity cascade.
Theory: https://t.co/OBkwZjUO6a

In crypto.  
The main danger in crypto is not leverage per se, but collateral that being used. 
Token margined VS USD/USDT margined
https://t.co/py7JAzI9dK
Inverse VS Linear contracts
https://t.co/6AFTdKpmAR