I am in my 60s, I shoot 5 days a week for about two hours with 6 to 8 arrows a round. Years ago when shooting a 96 pound bow and doing long holds, I felt something give in the base knuckle of my middle finger, it still flares up if I start working on things and doing to much hold time and blank draws when I shoot right handed. Jamming and torquing joints under pressure is not good for them. Two years ago I hurt my back between my shoulder blades when shooting a 32 pound target bow. The hold time was too long, the clicker was set up too long, I was having fun for too long. Oddly, when I go on long shooting binges and just do the Hill swing draw anchor deep release thing, I never hurt myself. I should have listened to John Schulz 44 years ago and got that 55 pound yew for my first custom longbow and then worked up to maybe just 65 pounds, but being young and dumb and strong as a bull, I started out heavy and went heavier.