Didn't partner up like usual yesterday at boxing. Instead, after skipping rope and shadowboxing, we did footwork drills using rope ladders, 2 rounds on the heavy bag, and then an easy circuit of various exercises like goblet squats, push-ups, medicine ball throws, and a few others. Ended with ab work and stretches. 

The ab exercises seem regressed my back a little, as I woke-up with the left side feeling pain, although nothing debilitating. It's anything that has me holding my legs low to the ground that treats me the worst, like flutter kicks and lying Russian twists.