Transthyretin amyloidosis is a slowly progressive condition characterized by the buildup of abnormal deposits of a protein called amyloid (amyloidosis) in the body's organs and tissues.
If you play tennis, you may be familiar with the different racket customizing choices you have -- common choices include string type, gauge and tension. Not so common is an inexpensive device called a shock absorber or vibration dampener. These devices have no impact on your performance, but some players can't play without one. It's a personal choice, and if you do use a dampener, its placement must comply with the rules of the International Tennis Federation.
Playing tennis well requires a combination of speed, strength and finesse. To build your strength, perform high-repetition resistance exercises that will firm up your body and increase your muscular endurance. Avoid heavy-weight, low-rep activities that can bulk you up and reduce your agility on the court.