A lazy day is one in which I have few or no obligations, in which I’m free to do as I please.  What pleases me is engage in recreational reading, drawing, needlework for fun, taking a leisurely walk or drive, sitting on the porch or campfire, taking a nap, wearing something comfy I wouldn’t wear to go out, listening to relaxing music, having a cup of ice-cold Kool Aid in summer or hot camomile tea in winter, and most of all, not looking at a clock.
A whole day spent in bed means I’m quite unwell, or completely exhausted from some very unusual circuмstance.