A strange question, but Isaac has moments where his legs shiver/quiver quite fast and it worries me when he does it as I'm concerned about blood flow or a trapped nerve? Is this a common thing in babies?? Also, his ankles seem quite floppy I know he's not walking yet and so his ankles aren't 'used' much, but should they be so 'loose', for want of a better word? He doesn't appear in any discomfort with either, it's just me that is