I agree - it took me until ~25 to focus on my health. I've felt myself get younger and more energetic over the past few years. Observing my family, I have real

I agree - it took me until ~25 to focus on my health. I've felt myself get younger and more energetic over the past few years. Observing my family, I have realized how much exercise impacts your quality of life as you age. I've seen family blame "just getting old" for many symptoms of poor health choices, such as problems walking up stairs or type II diabetes. If they focused on health, they might be able to improve their quality of life significantly! As a specific example - various studies have correlated the ability to stand up (or, doing a squat) not only with how long your life is - but also how long you will live independently. Extrapolating this - not only does exercise have the potential to extend your life, but it also extends how long you can continue to do what you want in life - such as traveling, walking, living alone, etc. Being specific - I know one 60-year-old who ran a half marathon last year, and another who can barely walk up the stairs to his bedroom. I wish I had learned better health and exercise routines as a teenager!