Leg kicking- HELP

Ornella

My 14 week old baby has been picking his legs up and smashing them down in the middle of the night as he sleeps. Sometimes it wakes him and other times it does not but he does it continuously throughout the night.

Is this normal? Anyone else’s baby do this or did this? I will bring it up to his pediatrician in a few weeks but was wondering if anyone else had this happen.