I went through the 3 week intro program and have been at Level 1 for the last several weeks. Have followed the schedule religiously and really enjoy the workouts. My only issue is I am experiencing low back weakness, no real pain though.
I have (or so I thought until this program) a well rounded background, from Olympic lifting, power lifting, running, bodyweight training, swimming, MMA, etc... I do have diagnosed lumbar issues, but through stretching/therapy treatments, I have learned to resolve any low back issues on my own. Wondering if anyone experienced the same thing when beginning these workouts. I have been able to deadlift and squat with minor issues for years, but could I be experiencing this issue because of a never addressed imbalance (plus I'm in my 50s) as well?