Stop overloading your body capacity on heavy
weights. It's like herniating your discs along your back. Once the disc pops out, it continues to pop out with ease if you stress it.
Just like every part of your body, you have to condition the body to tackle the tasks little by little. Just like PE. If your body is not conditioned to tackle the same
weight over and over again, and you suddenly overstressed your body because you are under the weathers or your body is too tired, you get a nice present called a hernia.