Mobility is incredibly important for retaining the ability to move and play, as well as maintaining independence, as we age. Mobility — also known as active flexibility or active range of motion — is the ability to control joints and muscles throughout a range of motion, meaning the muscles can be contracted and strength can be exerted throughout that range of motion. Being mobile allows for more movement possibilities, as it encompasses flexibility and the strength to use that flexibility. When people say they want to be more “flexible”, what they actually mean is that they want to be more “mobile”.