Nothing

Just to clarify, nobody, ever 'does nothing', there is never 'nothing going on' something always happens, somebody always does something, or they're dead, being dead is also something, but is 'doing nothing' in a truer sense. 'doing nothing' is not the same as not moving, still waters run deep. perhaps when asked the question "what have you been up to?"
you would better reply "nothing different" perhaps replying this way often might help you realise you should, or are always 'doing something'