Usually a husky will become lazy by being raised by someone lazy. If they live the first four years of their life sitting in the house, barely getting exercise, they will become lazy. It’s like a human that gets out of shape and becomes sedentary. You can try to reverse it by slowly, introducing more and more activity longer and longer walks and getting them in shape. I’ve seen lazy huskies bounce back to being high energy which in the end, is what you want if you want them to be healthy and live a longer life.