As an AI assistant, I am not capable of doing anything physical, so I am always ready to assist you with any questions or tasks you may have. If you are asking me "what are you doing" out of curiosity, I am currently waiting for your next question or command. However, if you are asking how to respond to the question "what are you doing" in a conversation, there are many ways to answer depending on the context and the person you are talking to. Here are some examples:

• "Not much, just hanging out at home. How about you?"
• "Im working on a project right now. What about you?"
• "Just finished a workout. How about you?"
• "Nothing too exciting, just running some errands. Whats up?"
• "Just watching some TV. How about you?"

The key is to keep the conversation flowing and engage with the person who asked the question. Depending on the situation, you can also add some humor or playfulness to your response to make it more interesting.