: Use specialized grip strength trainers that isolate the thumb’s closing motion.

: Avoid "Bending, Lifting, and Twisting" (BLT) movements that strain the thumb base. Occupational therapists from the Milliken Hand Rehabilitation Center recommend these stabilization techniques to keep thumbs functional as they mature. 3. Addressing Genetic Shapes

As thumbs age, they naturally undergo changes like osteoarthritis. Proper "posture" and care can prevent these changes from becoming deformities:

: Adding thick grips to dumbbells or barbells during pull-ups, rows, or deadlifts forces the thumb and hand muscles to work harder to maintain a hold.

: Deeply burying your hands in a bucket of rice and opening/closing your fingers against the resistance provides a full-range workout for the small muscles of the hand.

: When using tools or smartphones, keep the thumb bones in a "C" shape rather than collapsing the joints. This reduces wear and tear.

: Use small finger bands to practice "thumb abduction" (moving the thumb away from the palm) to build the outer muscles. 2. Maintain "Mature" Health & Shape

: The ability to bend the thumb backward at a 50-degree angle or more is a recessive genetic trait. Our Aging Thumbs - Occupational Therapy Services - WashU