See also

• muscle maintenance

As we age, some “system functions” will decline faster than others. Which ones are the most important/valuable to protect?

— Half Ranked:

1. BMI
2. muscle strength (esp. upper body) + endurance
3. bone strength
4. CRE .. many elderly can maintain CRE through swim, hiking, jogging
5. short-term memory,
6. eyesight, hearing
7. appetite .. consider grandpa + R.Teo’s dad
8. sexual health without aid
9. balancing while jogging/climbing

Note lower-ranked items are often high-value but too hard (or too easy) to preserve. No perfect example, but I will say sexual.