I've come to this realization that my core has let me down (or that I've never really payed attention to my core).
To be honest, I've never payed my core it's due -- 20 sit ups were a chore -- always were and I found doing sit ups boring so I neglected my core.
For example: even in my youth I was a decent biker, fencer but I always would run into back problems.
I've had two lower back surgeries.
Now in my 40s as I try to get back into shape it seems my core gives out long before say my legs or other part of the body. Actually I see that I can out-cycle people 1/2 my age but when I do that getting out of bed the next day can be a chore (back stiffens)
So I've thought of spending six to twelve months focusing especially on my core while doing other things I like like bicycling and yoga.
So Question(s): 1. Is how I'm thinking about this problem sound? 2. I was trying to find an exercise regimen that would be suitable for supplemental core conditioning and I've not found anything that I can say I can confidently say is what looking for -- so any pointers in that direction would be appreciated.