hvyhitter hit it on the head I think. I am actually an ergonomics engineer, so I help companies address work-related injuries due to force, repetition, and awkward posture. I see potential to apply this technology of injury prevention to archery. If you shoot heavy there are some things you can do that seem intuitive for preventing injuries:
- Limit # arrows you shoot, and make each one count.
- Pace yourself. Shoot an arrow, retrieve it, and shoot another. Shooting 100+ arrows is not a simulation or practice for any sort of hunting conditions (unless shooting doves, lol). Seems to me that most hunting situations would require you to shoot "cold", under pressure without a lot of warmup.
- Space out your practice so you have a day of rest between sessions. Avoid shooting 3-4 days in a row.
- If you begin to experience ANY discomfort while practicing, STOP. Take a few days off and you will be good as new. Most injuries begin with subtle signals. Usually a severe injury is due to someone shooting (or working) through the pain until it worsens to the point they can't hack the pain. Then it can take weeks or months to recover.
- Increase your strength by lifting weights. If you lift weights with any intensity, you can increase your maximum strength by 30% or more rather easily. The pulling a heavier bow will not feel heavy.
Just a few tips. That said, I choose to shoot 50-55 lbs because I like to shoot longer practice sessions and like the added control. I can shoot a heavier bow (release is noticeably better) but I need to be fresh and rested, and limit my shots.