If your body hurts after golf, then don't swing so hard. It's easy to do and I still think that some day I'll be able to do it. Golf is a game of mind over matter and if you don't mind, then it doesn't matter.My body hurts all over after 18 holes. But I’m sure it would build up If I could play often enough. Glad your back can take it. My profession has me riding a tractor all day, every day, for 6-7 months of the year. And I’ve done that for over 40 years. Throw in some dozer work and my back is finished. But, I can still play golf, though terrible at it. But I’m thankful.
Hope that helped.