Honestly, a few of us tried that baking soda thing din before, haha, some swear na gumagana but honestly walang scientific basis talaga, it's more of a fun game lang! The freezing at the bubbling reaction depende talaga sa kung gaano acidic or alkaline ang urine mo that day, so it's not really reliable para malaman kung boy or girl. Better off na mag-ultrasound na lang talaga para sure, pero kung gusto mo lang mag-try for fun, go ahead, walang mawawala!