This is an excellent discussion about why lifting barbells is so very important, especially for us aging folks. Cardio is not king, at least it's not king if you're continuing to lose muscle/bone as you age.

A good excerpt to watch is the segment titled: "Safety Concerns" at the 27:25-minute point, in which the doctor explains why the Deadlift is such a crucial exercise. It busts a myth that most people think that Deadlifts is an exercise that is an injury waiting to happen.

Here's a little bio of the doctor being interviewed: https://www.greysteel.org/team-1