The act or power of resisting, opposing, or withstanding.
The opposition offered by one thing, force, etc., to another.
Resistance training works by causing microscopic damage or tears to the muscle cells, which in turn are quickly repaired by the body to help the muscles regenerate and grow stronger. The breakdown of the muscle fiber is called "catabolism," and the repair and re-growth of the muscle tissue is called "anabolism." You're probably familiar with the term anabolic when used with steroids. Anabolic means to grow, and that's exactly what happens after you break down the muscle fibers with resistance exercise. In fact, many biological processes of growth in the body require some breakdown, or catabolism, prior to re-growth. For instance, bones must be broken down first before calcium and other growth factors repair the bone and make it stronger. With muscles, testosterone, insulin-like growth factor, growth hormone, protein, and other nutrients rush to the muscle after a resistance-exercise session to help repair the muscles to make them stronger.
We need to have resistance in our lives to cause us to grow stronger. We've all heard the old saying "What doesn't kill us, makes us grow stronger." These words are truer than most of us care to admit. I say that to say, we should welcome resistance in our lives.. if we can look at the whole picture and realize that those times in our lives will bring us strength. When we are injured or resisting we know that nutrients (God) rushes to help repair the "muscle" and then in turn, we grow stronger. It's wonderful to know, that our struggles in this world are not for ought. They are there for strength building... and for helping others. When we can look someone in the eye during their time of need and tell them we know what their situation is like because we've been there, then it's been worth it all.