Isn't such perspective limited? My parents are 67 and 65 years old; I would say say that daily brisk walking is possibly much more suitable for them (their bod

Isn't such perspective limited? My parents are 67 and 65 years old; I would say say that daily brisk walking is possibly much more suitable for them (their body) in comparison to weightlifting -- irrespective of your personal definition of "exercise". And I'm damn sure their heart rate easily exceeds 100+ if that's the main variable to control.