[EdwardMSmith]

The single biggest physical improvement to my life was core strengthening. Basically 15 minutes of crunches, plank, and Russian twists every other day.

No more back aches at all. I never realized just how much and how constant the back pain I had was. Even when I was sleeping - tossed and turned all night.

[branchless]

I've been going to the gym all year and progressed. This holiday as I'm unable to go for 2 weeks I've started doing planks. Now I hurt all over! I shall persist. They seem great.