Rest is often ignored, but it is one of the most powerful principles of strength training. When you train, you create tiny tears in your muscles. During rest, your body repairs these tears and makes the muscles stronger.
Without proper rest, your body becomes tired, and progress slows down. Sleep is especially important because most muscle repair happens during deep rest.
Recovery is not a sign of laziness, it is a part of the growth process. If you want better results, you must give your body time to rebuild. Questions Are Here : https://bildbyco.com/blog/principles-of-strength-training-and-conditioning/