put your back intoput (your) back into (something)
to use a lot of physical effort to try to do something.
You could dig this plot in an afternoon if you put your back into it.
put (one's) back into (something)
To put a lot of effort into doing something as quickly or effectively as possible. Come on, we need to get this car off the road. Put your back into it and push!It's clear that the legislators have put their backs into crafting a bill that will find support across party lines, as well as in the general population.