diff --git a/server/src/math/calculations.rs b/server/src/math/calculations.rs
index cacfe71..27f62fd 100644
--- a/server/src/math/calculations.rs
+++ b/server/src/math/calculations.rs
@@ -226,20 +226,29 @@ pub fn plot_weight_loss(
             // .margin(20)
             .x_label_area_size(30)
             .y_label_area_size(50)
+            .right_y_label_area_size(50)
             .build_cartesian_2d(
                 mindate_chrono..maxdate_chrono,
                 (min_weight - 2.)..(max_weight + 2.),
-                // 70_f32..90_f32,
             )
-            .unwrap();
+            .unwrap()
+            .set_secondary_coord(
+                mindate_chrono..maxdate_chrono,
+                (min_weight - max_weight - 2.)..2.,
+            );
 
         chart
             .configure_mesh()
-            .y_desc("kg fat burned")
+            .y_desc("weight [kg]")
             .y_max_light_lines(4)
             .x_max_light_lines(6)
             .draw()
             .unwrap();
+        chart
+            .configure_secondary_axes()
+            .y_desc("fat burned [kg]")
+            .draw()
+            .unwrap();
 
         chart
             .draw_series(LineSeries::new(
@@ -268,20 +277,14 @@ pub fn plot_weight_loss(
                 RED.stroke_width(3),
             ))
             .unwrap()
-            .label("kg burned")
+            .label("fat burned")
             .legend(|(x, y)| PathElement::new(vec![(x, y), (x + 20, y)], RED));
 
         chart
             .draw_series(LineSeries::new(
-                weight.iter().map(|w| {
-                    (
-                        time_date_to_chrono_naive_date(w.datetime.date()),
-                        // mindate_chrono
-                        //     .checked_add_days(chrono::Days::new(i.try_into().unwrap()))
-                        //     .unwrap(),
-                        w.weight,
-                    )
-                }),
+                weight
+                    .iter()
+                    .map(|w| (time_date_to_chrono_naive_date(w.datetime.date()), w.weight)),
                 BLUE.stroke_width(3),
             ))
             .unwrap()