Whether you're getting ready for a race or a hard workout, the process of spiking up stirs a familiar excitement and anxiety for what's to come: your body instinctively knows it's time to perform. If ...

When Faith Kipyegon toes the starting line at the Stade Charléty in Paris next Thursday, she’ll be wearing track spikes as light as 11 marshmallows. Her running suit will feature tiny nodes that mimic ...