If your cat tends to knead your feet and then crawl up on top of your feet or lower legs, she is just letting you know she loves you and is protecting you so you can go to sleep without a worry.
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Why Does My Dog Like to Sleep in Between My Legs? from dogdreamcbd.com
This position shows that the cat feels safe and comfortable, but it does not mind some action if there is any. Cats sometimes sleep on their back for comfort, relieving pressure on their legs and tummy. He's marked both you and the bed with his scent.
Your dog might also like to sleep between your legs.
Eventually she will move off your feet and resume her position near your feet but on the bed, more quickly if you move your legs around a lot. I think it may have to do with comfort and security. Cats' body temperatures run several degrees higher than humans, so they like snuggling in a warm place. I sent it to the surgeon who had helped my cat through an emergency surgery;
