Does Glow Nurture let me use the metric system? Glow Support Team November 16, 2018 08:24 Updated Sure. From the Me/More tab scroll to Settings > Height/Weight unit. Related articles Can I use the metric system with Glow? What features are included in Glow Nurture? Why is my pregnancy showing up as different weeks in Glow and Nurture? Where did Glow source its pregnancy articles? I set my cycle length as 28 days. Why are my predictions not reflecting this? How do I change it?