They tell old people to:

Eat less animal protein.
Take it easy.
Retire.
Take the elevator.
Avoid heavy weights.
Kiss your cartilage goodbye.

All for "longevity."

When the opposite is true.

— Mark_Sisson (@Mark_Sisson) October 23, 2019

Yep. You should be eating meat, stressing your body as hard as you can without injury as you get older. Walk a lot. Lift weights. Why is so much fitness and nutrition advice just utter nonsense? Oh, right: capitalism.