I had assumed that this was already being done. British mothers hooked on “powerpramming”:
At first, the sight of 20 red-faced women lying on the damp grass of a central London park and juggling newborn babies is quite worrying.But this is “powerpramming,” a new craze taking off in Britain in which new mothers are encouraged to use their offspring — and the inevitable baggage that comes with them — as exercise aids.
They’re even promoting open source powerpramming.