Diet and exercise are two important components to consider if you want to live a long and healthy life.

Protein is essential for proper muscle growth and maintenance—especially for seniors, as your body becomes increasingly less able to use dietary protein for building muscle—but I would recommend caution.

There are drawbacks to eating too much protein. Balance is key, as is making sure you're getting high-quality protein. As for exercise, strength training can help counteract age-related muscle wasting, and help strengthen your bones as well.

Moreover, upping the intensity of your resistance training can achieve a number of beneficial changes on the molecular, enzymatic, hormonal, and chemical level in your body, which will help slow down many of the diseases caused by a sedentary lifestyle.