Not lazy but definitely drained out of powers
I am pretty sure it can. II 've had it a couple of times and it hits me just like a bad cold. I feel like I can sleep for a week when I have sinus issues. I am guessing it has to do with the fact that since you can't breathe normally it messes with your sleep habits.
Well, sinusitis is an infection of the sinuses and any infection can make you feel like you have no energy (lazy), so I would say yes, it definitely could, especially if you're running a fever with it.
Get plenty of rest, drink plenty of fluids (will help keep the sinus congestion thinner andeasier to blow out) and use whatever meds your doc has prescribed.