I've been working on proper posture and really swinging around my angled spine. I used to be really upright and vertical in my swing. I notice that a swing with more forward lean puts more stress on the back and I want to avoid injury and soreness as much as possible. I'm in solid physical shape, so that's not my concern.
Before the question, a little set-up: When you lift weights, especially squats/deadlifts/upright rows/power moves, trainers recommend that you "set your core" by contracting your abdominal muscles before the lift. You also want to keep your lower back actively arched (lower spine pushing toward your belly button) to protect the muscles there.
When you set up to take your golf swing, do you contract your abdominal muscles before you start your back swing? Do you arch your lower back at all?
I'm learning that tension is the enemy of the golf swing in most cases, but perhaps the core should be more flexed during the swing to protect the back. Thoughts? How do you swing around your spine while protecting your lower back?