"why getting old is hard"

Is Getting Weaker Inevitable with Age? Sarcopenia, the Disaster of Bones and Muscles Begins

Lately, have you felt it unusually hard to climb stairs, or burdensome to lift heavy objects? If you brushed it off thinking, 'It is just what happens when you age,' this might be a warning that the pillars of your body are shaking. Please take a moment to listen closely.