Do you want to be strong and “harder to kill and more useful in general”? Or in diapers at a nursing home?
Educate yourself with these great articles:
STRENGTH TRAINING FOR SENIORS
“I have found a fountain of youth, and it flows out of a barbell” Dr. Jonathon Sullivan MD, PhD
Barbell Medicine: http://startingstrength.com/articles/barbell_medicine_sullivan.pdf
Is strength training bad for your heart? http://stronglifts.com/strength-training-cardiovascular-fitness-blood-pressure/
How to build muscle: http://stronglifts.com/how-to-build-muscle-mass-guide/
Squats and Knee/Back Pain Myths:
Appropriate Conditioning for athletes (if you don’t need endurance, then don’t train for it! And most sports do not require endurance.)
Is holding your breath dangerous? The Valsalva Maneuver.
-A landmark 2008 study of nearly 9000 men followed for an average of nearly nearly 20 years showed that muscular strength is inversely associated with death from all causes, even when adjusting for fitness and cardiovascular health 34. Ruiz JR, Sui X, Lobelo F, et al. Association between muscular strength and mortality in men: prospective cohort study. BMJ 337:a439, 2008