Because they have no muscle strength in the lower torso and can't keep the body upright.
Stooping compresses the lungs that don't take in enough air...also leads to lung infections.
Pneumonia is no 1 cause of death of senior citizens.
Spokeshave (age 80) who works out with weights at the gym twice a week
Kudos to you for staying active. I truly believe that’s the main reason for a long life and a sound mind. My husband is almost 84 and he is stooped in the shape of his recliner. It’s sad.
I bought him a new recliner for Christmas and ended up putting it in the livingroom. It doesn’t have the lever to raise and lower the foot/leg platform and he didn’t have the strength in his legs to get out of the chair. He is almost to the point of needing a lift-chair but I’m holding out. I don’t want to enable him to not use his legs.