I mean, laziness is all in the mind. It's like a mindset that you have adopted to, due to common practice of it. You must really sleep and rest alot hence your laziness.
I suggest you get your ass off the couch/bed and go do some excercise. Or alternatively, you could hang out with a few buddies and chat. Bond with them and you know, share what's been going on with each other. You would know your friends more intiminately this way and build on the friendship. (Unless of course, you don't have a social circle, not to be prejudiced, but the people i know who prefers to sleep at home are usually lonely people with no friends.)
Go get some friends, do some sports, adopt a healthy lifestyle.
IT'S ALL IN THE MIND 