How to Protect Your Lower Back While Shoveling Snow

We just got a massive dump of snow here in Canada and my back is already feeling it. I am looking for how to protect your lower back while shoveling snow so I do not end up on the couch for the next week. I know that the combination of heavy lifting and twisting is a recipe for a herniated disc.

I am trying to use my legs more and keep the shovel close to my body. I am also making sure I do not throw the snow over my shoulder. I am wondering if there are specific warm up moves I should do before I head out into the cold. I have heard that keeping the core tight and taking smaller loads is the way to go.

What are your tips for surviving the winter without a back injury? I am looking for any gear recommendations like ergonomic shovels that actually make a difference. I would love to hear from fellow Canadians or anyone else who deals with a lot of snow. I want to get the driveway clear safely!