Aww, normal lang yan mama, especially if baby is still newborn! Usually it's just gas, hunger, or they're testing out their body movements pa lang, one of my mum friends said her baby was jumping around nonstop the first few weeks kaya nagpanic siya, pero after a month or two naging calm na. As long as baby is feeding well, gaining weight, and hindi sounding distressed, you're probably good, but kung sobrang worried ka pa rin or may other symptoms like fever or hindi kumakain, better to check with your pedia just to be sure!