diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/garmin/GarminWorkoutParser.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/garmin/GarminWorkoutParser.java
index a2576605f..97433a4b6 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/garmin/GarminWorkoutParser.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/garmin/GarminWorkoutParser.java
@@ -180,6 +180,27 @@ public class GarminWorkoutParser implements ActivitySummaryParser {
         if (session.getMaxHeartRate() != null) {
             summaryData.add(HR_MAX, session.getMaxHeartRate(), UNIT_BPM);
         }
+        if (session.getHrvSdrr() != null) {
+            summaryData.add(HRV_SDRR, session.getHrvSdrr(), UNIT_MILLISECONDS);
+        }
+        if (session.getHrvRmssd() != null) {
+            summaryData.add(HRV_RMSSD, session.getHrvRmssd(), UNIT_MILLISECONDS);
+        }
+        if (session.getAvgSpo2() != null) {
+            summaryData.add(SPO2_AVG, session.getAvgSpo2(), UNIT_PERCENTAGE);
+        }
+        if (session.getEnhancedAvgRespirationRate() != null) {
+            summaryData.add(RESPIRATION_AVG, session.getEnhancedAvgRespirationRate(), UNIT_BREATHS_PER_MIN);
+        }
+        if (session.getEnhancedMaxRespirationRate() != null) {
+            summaryData.add(RESPIRATION_MAX, session.getEnhancedMaxRespirationRate(), UNIT_BREATHS_PER_MIN);
+        }
+        if (session.getEnhancedMinRespirationRate() != null) {
+            summaryData.add(RESPIRATION_MIN, session.getEnhancedMinRespirationRate(), UNIT_BREATHS_PER_MIN);
+        }
+        if (session.getAvgStress() != null) {
+            summaryData.add(STRESS_AVG, session.getAvgStress(), UNIT_NONE);
+        }
         if (session.getAverageCadence() != null) {
             summaryData.add(CADENCE_AVG, session.getAverageCadence(), UNIT_SPM);
         }
@@ -213,9 +234,19 @@ public class GarminWorkoutParser implements ActivitySummaryParser {
             // Find the first time in zone for the session (assumes single-session)
             if (fitTimeInZone.getReferenceMessage() != null && fitTimeInZone.getReferenceMessage() == 18) {
                 final Double[] timeInZones = fitTimeInZone.getTimeInZone();
-                final double totalTime = Arrays.stream(timeInZones).mapToInt(Double::intValue).sum();
+                if (timeInZones == null) {
+                    continue;
+                }
+                final double totalTime = Arrays.stream(timeInZones).mapToDouble(Number::doubleValue).sum();
+                if (totalTime == 0) {
+                    continue;
+                }
+                if (timeInZones[0] != null && timeInZones[0] == totalTime) {
+                    // The total time is N/A, so do not add the section
+                    continue;
+                }
                 final List<String> zoneOrder = Arrays.asList(HR_ZONE_NA, HR_ZONE_WARM_UP, HR_ZONE_EASY, HR_ZONE_AEROBIC, HR_ZONE_THRESHOLD, HR_ZONE_MAXIMUM);
-                for (int i = 1; i < zoneOrder.size(); i++) {
+                for (int i = 0; i < zoneOrder.size(); i++) {
                     double timeInZone = timeInZones[i] != null ? Math.rint(timeInZones[i]) : 0;
                     summaryData.add(
                             zoneOrder.get(i),
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/ActivitySummaryEntries.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/ActivitySummaryEntries.java
index 1d8b08264..00e9a8a5a 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/ActivitySummaryEntries.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/ActivitySummaryEntries.java
@@ -77,6 +77,14 @@ public class ActivitySummaryEntries {
     public static final String HR_ZONE_EXTREME = "hrZoneExtreme";
     public static final String HR_ZONE_MAXIMUM = "hrZoneMaximum";
 
+    public static final String RESPIRATION_AVG = "average_respiration_rate";
+    public static final String RESPIRATION_MAX = "max_respiration_rate";
+    public static final String RESPIRATION_MIN = "min_respiration_rate";
+    public static final String SPO2_AVG = "menuitem_spo2";
+    public static final String STRESS_AVG = "menuitem_stress";
+    public static final String HRV_SDRR = "hrv_sdrr";
+    public static final String HRV_RMSSD = "hrv_rmssd";
+
     public static final String LANE_LENGTH = "laneLength";
     public static final String LAPS = "laps";
     public static final String LAP_PACE_AVERAGE = "averageLapPace";
@@ -118,6 +126,7 @@ public class ActivitySummaryEntries {
     public static final String SETS = "workoutSets";
 
     public static final String UNIT_BPM = "bpm";
+    public static final String UNIT_BREATHS_PER_MIN = "breaths_per_min";
     public static final String UNIT_CM = "cm";
     public static final String UNIT_UNIX_EPOCH_SECONDS = "unix_epoch_seconds";
     public static final String UNIT_KCAL = "calories_unit";
@@ -125,11 +134,12 @@ public class ActivitySummaryEntries {
     public static final String UNIT_LAPS = "laps_unit";
     public static final String UNIT_KILOMETERS = "km";
     public static final String UNIT_METERS = "meters";
+    public static final String UNIT_PERCENTAGE = "%";
     public static final String UNIT_ML_KG_MIN = "ml/kg/min";
     public static final String UNIT_NONE = "";
     public static final String UNIT_HOURS = "hours";
     public static final String UNIT_SECONDS = "seconds";
-    public static final String UNIT_MILLISECONDS = "milliseconds";
+    public static final String UNIT_MILLISECONDS = "milliseconds_ms";
     public static final String UNIT_SECONDS_PER_KM = "seconds_km";
     public static final String UNIT_SECONDS_PER_M = "seconds_m";
     public static final String UNIT_METERS_PER_SECOND = "meters_second";
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/fit/GlobalFITMessage.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/fit/GlobalFITMessage.java
index 75dc79a85..7507f7121 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/fit/GlobalFITMessage.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/fit/GlobalFITMessage.java
@@ -117,7 +117,14 @@ public class GlobalFITMessage {
             new FieldDefinitionPrimitive(110, BaseType.STRING, 64, "sport_profile_name"),
             new FieldDefinitionPrimitive(124, BaseType.UINT32, "enhanced_avg_speed", 1000, 0), // m/s
             new FieldDefinitionPrimitive(125, BaseType.UINT32, "enhanced_max_speed", 1000, 0), // m/s
+            new FieldDefinitionPrimitive(169, BaseType.UINT16, "enhanced_avg_respiration_rate", 100, 0  ), // breaths/min
+            new FieldDefinitionPrimitive(170, BaseType.UINT16, "enhanced_max_respiration_rate", 100, 0  ), // breaths/min
             new FieldDefinitionPrimitive(178, BaseType.UINT16, "estimated_sweat_loss"), // ml
+            new FieldDefinitionPrimitive(180, BaseType.UINT16, "enhanced_min_respiration_rate", 100, 0  ), // breaths/min
+            new FieldDefinitionPrimitive(194, BaseType.UINT8, "avg_spo2"),
+            new FieldDefinitionPrimitive(195, BaseType.UINT8, "avg_stress"),
+            new FieldDefinitionPrimitive(197, BaseType.UINT8, "hrv_sdrr"), // ms
+            new FieldDefinitionPrimitive(198, BaseType.UINT8, "hrv_rmssd"), // ms
             new FieldDefinitionPrimitive(253, BaseType.UINT32, "timestamp", FieldDefinitionFactory.FIELD.TIMESTAMP)
     ));
 
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/fit/messages/FitSession.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/fit/messages/FitSession.java
index 41284081c..7ef307bb7 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/fit/messages/FitSession.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/fit/messages/FitSession.java
@@ -165,11 +165,46 @@ public class FitSession extends RecordData {
         return (Double) getFieldByNumber(125);
     }
 
+    @Nullable
+    public Float getEnhancedAvgRespirationRate() {
+        return (Float) getFieldByNumber(169);
+    }
+
+    @Nullable
+    public Float getEnhancedMaxRespirationRate() {
+        return (Float) getFieldByNumber(170);
+    }
+
     @Nullable
     public Integer getEstimatedSweatLoss() {
         return (Integer) getFieldByNumber(178);
     }
 
+    @Nullable
+    public Float getEnhancedMinRespirationRate() {
+        return (Float) getFieldByNumber(180);
+    }
+
+    @Nullable
+    public Integer getAvgSpo2() {
+        return (Integer) getFieldByNumber(194);
+    }
+
+    @Nullable
+    public Integer getAvgStress() {
+        return (Integer) getFieldByNumber(195);
+    }
+
+    @Nullable
+    public Integer getHrvSdrr() {
+        return (Integer) getFieldByNumber(197);
+    }
+
+    @Nullable
+    public Integer getHrvRmssd() {
+        return (Integer) getFieldByNumber(198);
+    }
+
     @Nullable
     public Long getTimestamp() {
         return (Long) getFieldByNumber(253);
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index cfb2cc5c8..888e50d88 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -2188,6 +2188,12 @@
     <string name="hrZoneThreshold">Threshold</string>
     <string name="hrZoneExtreme">Extreme</string>
     <string name="hrZoneMaximum">Maximum</string>
+    <string name="average_respiration_rate">Respiration Rate</string>
+    <string name="max_respiration_rate">Max Respiration Rate</string>
+    <string name="min_respiration_rate">Min Respiration Rate</string>
+    <string name="hrv_sdrr">HRV SDRR</string>
+    <string name="hrv_rmssd">HRV RMSSD</string>
+    <string name="breaths_per_min">breaths/min</string>
     <string name="TrainingEffect">Training Effect</string>
     <string name="aerobicTrainingEffect">Aerobic Effect</string>
     <string name="anaerobicTrainingEffect">Anaerobic Effect</string>
@@ -2264,6 +2270,7 @@
     <string name="strokes_unit">str</string>
     <string name="seconds">sec</string>
     <string name="milliseconds">milliseconds</string>
+    <string name="milliseconds_ms">ms</string>
     <string name="swolf_index">swolf index</string>
     <string name="swim_style">swim style</string>
     <string name="laps_unit">laps</string>