* Muy bien, gracias (Very well, thank you)
* Bien, y tu (Fine, and you?)
* Asi asi (So-so)
* No muy bien (Not very well)
* Estoy enfermo (I'm sick)
* Estoy cansado (I'm tired)
* Estoy estresado (I'm stressed)
* Estoy feliz (I'm happy)
* Estoy emocionado (I'm excited)
* Estoy triste (I'm sad)
Remember to use the appropriate level of formality and politeness, depending on who you are talking to. For example, you would use a more formal response when speaking to a stranger or an elder, and a more casual response when speaking to a friend or family member.