If you’ve ever had tennis elbow—a chronic pain on the outside of your elbow—you know how debilitating it can be. It makes any sort of lifting or manual labor excruciating.

“Wait, what does this have to do with being prepared?” It’s pretty simple: learning how to treat conditions like this yourself at home makes you more self-reliant. Plus, it saves you the time, cost, and hassle of going to a doctor, who likely isn’t familiar with these techniques anyway.