I just started working a job requiring a lot of heavy lifting (assembling/disassembling playsets). Some of these things are practically mansions and cost around 60 g's so you can imagine how much building material goes into the construction of a big one. Within the first few hours i noticed a sharp pain on the right side of my back and stretching to my side. I figured it was due to the lifting, so was basically wondering if there are any techniques that are helpful to prevent injury when dealing with lifting heavy materials in general. Any advice will be appreciated, thanks.