Title Tags
The five fitness tests that tell how well you're ageing
https://www.telegraph.co.uk/health-fitness/conditions/ageing/fitness-tests-predi ...
fitness strength (edit)
How to Get Stronger in the New Year - The New York Times
https://www.nytimes.com/2019/01/01/well/move/how-to-get-stronger-in-the-new-year ...
strength training (edit)
muscle and aging: how to prevent muscle loss and why you should care - huffpost
http://www.huffingtonpost.com/entry/muscle-and-aging-how-to-prevent-muscle-loss- ...
exercise strength (edit)