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? Why is my pregnancy showing up as different weeks in Glow and Nurture? I set my cycle length as 28 days. Why are my predictions not reflecting this? How do I change it? What features are included in Glow Nurture? Why isn't my baby growing?