I have had shoulder injuries in the past, but usually it's from training.
It's easy to get four days a week of training in and I don't spend more than 55-60 minutes in the gym.
The turning point really is just knowing you're an imbecile.
Once you are over 30, 35 years old, I think everyone should get down to the gym and start moving again.
I'm doing it by enjoying what I do in the gym, really enjoying my foods.
Most of the hotel gym's are not adequate. I mean you might be able to train your arms, but you aren't going to be able to train legs, back, or even chest if they don't have dumbbells and benches.