Jumping jacks are one of those old-school exercises that most of us haven't thought about since school PE days. Simple, familiar and tucked somewhere in the warm-up section of a workout, they're hardly the move to steal the spotlight. And I'll admit, they don't feature heavily in my workout routine.
But recently, I noticed jumping jacks repeatedly cropping up as a surprisingly effective move, with experts praising them for being a quick way to raise your heart rate, improve coordination, and even improve longevity - all without any equipment.
