Model Messed up(the Arms Partculary) when Imported to Unity

I imported my model into Unity and when I did, i notice the hands got messed up and there all squiggly. I don't know how the heck this happened, but the model looks fine in Blender and I imported the mesh into Unity before and it didn't have this issue before.

This is the first time this has happened and I dont know what the cause of it could be. The last time I check before it got to this, I was testing out the posing in Pose Mode and I saved. If anyone can help me, it would be much appropriated.