What is a warm up alternative for “Jumping Jacks” on hybrid routine when you have knee pain?#1848

When doing the warm up routine, the jumping jacks put too much pressure on my knee joints and cause me pain in the knees. Is there an alternative exercise to still warm up, but is knee joint friendly, ie: low impact.
Thank you 😊

So what’s the answer? This warmup move is harder than the exercises. I have pain from day 1 just because of this. What is an alternative?

I do low impact jumping jacks , same arm movement but only extend one leg to the side at a time ..