That's right Bro, when I start to play I'm my begining I I thought physical exercise wasn't helping me because my fingers would cramp up and I couldn't play smoothly, but then over time I felt very tired after playing, and the truth is that it's Physical exercise is necessary to strengthen the whole body. I'm not saying this to become a bodybuilder, but to take care of yourself, and here in the Canary Islands, older people don't want to exercise physical. That's why I keep trying to tell people to take care of themselves, that it's necessary to take care of the temple that GOD has given us to serve Him with the greatest excellence.I feel for you, Bro, and may God bless you.