“It keeps her supple,” they told Daily Mail. “Seated poses – known as asanas – are a Middleton favourite. Kate enjoys pilates too, which has helped her posture since having children.”
The 36-year-old likes to vary her hour-long workouts day-to-day, but there’s one exercise she never misses – planks.
“It tightens her muscles,” the insider said. “There are three elements the basic plank, the side plank and the prone sky dive all of which are positions Kate can hold for 45 seconds or longer and repeat at least ten times each.”
Sometimes she even ropes in her sister, Pippa, to be her gym buddy. The exercises on the agenda? “Cardio warm-ups, hip raises, diagonal and reverse lunges, stomach crunches, squats, calf raises, bridges and push ups.”
“Kate is an exercise junkie,” the insider added. “Pippa and Kate take their toned physiques extremely seriously.”
We certainly can tell.
This article originally appeared on Women's Health