Why Do Babies Raise Their Legs When Sleeping?

In most cases, baby is pulling up their legs simply to try to relieve themselves of gas pains, and it (along with the gas) shall pass.

Why does my baby lift his legs up in his sleep?

Formerly known as sleep myoclonus or nocturnal myoclonus, PLMD can affect any age or gender. The brief movements typically occur in the legs every 20 to 40 seconds. They happen in clusters, which can last from a few minutes to a few hours. The PLMD motions can come and go and may not happen every night.

Is it OK for baby to sleep with legs elevated?

7, 2019 -- The Consumer Product Safety Commission is warning parents not let a baby sleep in rockers, pillows, car seats, or any other product that holds an infant at an incline -- with their head higher than their feet.