The most effective thing i've used at age 40 now, is stress balls or foam balls. They come in different shapes and sizes and you can take em anywhere. Just do dexterity exercises from thumb to pinky and vice versa to strengthen the muscles which are less active than when your a young buck that seems to able to endure bein hit with a meteor....lol. Even though things like that do catch up, haha

Happy fingers make a happy man....ok, and woman too (pun police)

Rock Hard Rock Forever!!

twd