Normal bang naglalaway ang baby kapag tulog?

Sorry mommies for the question but I'm really curious. My baby is 6 months already.. and kahit nung 5 months pa sya mejo naglalaway na sya kapag tulog. Normal lang po ba yun? Sorry first time mom here. Ayan na lang po natira since pinunasan kona but kita nio po ba may tuyong laway na? Pls Answer mommies. Thanks