Most people don't know the answer to this question. To be clear, they understand what drew them to strength training in the first place, but they really don't understand the benefits of a properly performed strength training program. Understanding "Why" is and obvious and important place to start.
-Cardio-metabolic health. We often think about strength training as a means to simply improve strength, performance, and appearance, but strength training also plays a critical role in preventing chronic diseases such as heart disease and diabetes. Every adult should engage in proper strength training for this reason alone.
-Increased bone mineral density. Stronger bones help prevent fractures.
-Prevent muscle atrophy and age-related wasting of muscle known as sarcopenia. After the age 30 we progressively lose muscle. It doesn't how active we are or how much cardio we do, our muscles atrophy at the same rate as our sedentary counterparts. Strength training allows us to retain and increase our muscle tissue across the lifespan. A 90 year old can significantly increase lean muscle tissue.
-Improve functional capacity. The only true "functional training" is to train our muscles; because our muscles are what cause function.
-Improve metabolic rate. As we lose muscle, our metabolic rate goes down. Many in science assert that the reduction in our metabolism as we age is solely linked to our loss of muscle tissue. The more muscle we have, the greater our metabolic rate (the number of calories we expend while we aren't working out). Additionally, each time we strength train, we acutely increase our metabolic rate by 7-10% for the next 2-3 days.
-Improve cognitive function, enhance self-esteem, and combat depression. The often heard cliche is "my workout just makes me feel better" actually has significant scientific credibility.
-Enhance athletic performance. From distance runners to golfers to football players. Proper strength training improves performance and wards off injury