Beyond physical health, age 40 is a critical benchmark for general "rules of thumb" in life planning:
At age 40, your thumbs often begin to show the first signs of wear and tear, as basal joint arthritis (osteoarthritis at the base of the thumb) commonly starts developing between the ages of 40 and 50. Because your thumbs are responsible for approximately 40% of your total hand function, protecting them is vital for maintaining daily independence. Understanding the "Mature Thumb" mature thumbs 40
: Treat thumb posture with the same importance as back posture. Keeping the thumb in good alignment during tasks minimizes the stress on the basal joint. Beyond physical health, age 40 is a critical
To minimize wear and tear and preserve function, follow these "proper guide" strategies: Beyond physical health