@toddsdonald I agree with the points that @Peteski makes and would also suggest listening to the Breakfast with Boz podcasts on aging and how it affects your training. Basically you need to schedule in more recovery which means you are on the right track to find a plan that keeps you within the lines. I also had a weight lifting background before SUF and tried to maintain some of that intensity while doing the SUF plans. It didn’t work. If you do go that route I would suggest starting slowly and letting yourself adapt to the workload - something I learned the hard way.