Discovering the joys of weight lifting postpartum

Four months after his arrival into the world, my son spent every Tuesday and Thursday morning bouncing happily in the surrounds of a stripped-back gym. One of a host of babies merrily ensconced in buggies and bouncers for a mum and baby class, he looked on in benevolent bemusement as I got to grips with learning how to lift weights.  A first for both of us, it was hard to know which one of us...