diff --git a/BeeKit/HeathKit/CategoryHealthKitMetric.swift b/BeeKit/HeathKit/CategoryHealthKitMetric.swift
index 4d5aa462..2d555e1b 100644
--- a/BeeKit/HeathKit/CategoryHealthKitMetric.swift
+++ b/BeeKit/HeathKit/CategoryHealthKitMetric.swift
@@ -16,6 +16,8 @@ public class CategoryHealthKitMetric : HealthKitMetric {
     public let category : HealthKitCategory
     let hkSampleType : HKSampleType
 
+    public var precision: [HKUnit : Int] { [:] }
+
     internal init(humanText: String, databaseString: String, category : HealthKitCategory, hkSampleType: HKSampleType) {
         self.humanText = humanText
         self.databaseString = databaseString
diff --git a/BeeKit/HeathKit/HealthKitConfig.swift b/BeeKit/HeathKit/HealthKitConfig.swift
index 73ad41fa..d4cce37b 100644
--- a/BeeKit/HeathKit/HealthKitConfig.swift
+++ b/BeeKit/HeathKit/HealthKitConfig.swift
@@ -15,7 +15,7 @@ public enum HealthKitConfig {
             // Activity
             QuantityHealthKitMetric(humanText: "Active energy", databaseString: "activeEnergy", category: .Activity, hkQuantityTypeIdentifier: .activeEnergyBurned, precision: [HKUnit.largeCalorie(): 0]),
             QuantityHealthKitMetric(humanText: "Cycling distance", databaseString: "cyclingDistance", category: .Activity, hkQuantityTypeIdentifier: .distanceCycling),
-            QuantityHealthKitMetric(humanText: "Exercise time", databaseString: "exerciseTime", category: .Activity, hkQuantityTypeIdentifier: .appleExerciseTime),
+            QuantityHealthKitMetric(humanText: "Exercise time", databaseString: "exerciseTime", category: .Activity, hkQuantityTypeIdentifier: .appleExerciseTime, precision: [HKUnit.minute(): 1]),
             QuantityHealthKitMetric(humanText: "Nike Fuel", databaseString: "nikeFuel", category: .Activity, hkQuantityTypeIdentifier: .nikeFuel),
             QuantityHealthKitMetric(humanText: "Resting energy", databaseString: "basalEnergy", category: .Activity, hkQuantityTypeIdentifier: .basalEnergyBurned, precision: [HKUnit.largeCalorie(): 0]),
             StandHoursHealthKitMetric(humanText: "Stand hours", databaseString: "standHour", category: .Activity),
@@ -49,7 +49,7 @@ public enum HealthKitConfig {
             QuantityHealthKitMetric(humanText: "Vitamin D", databaseString: "dietaryVitaminD", category: .Nutrition, hkQuantityTypeIdentifier: .dietaryVitaminD),
             QuantityHealthKitMetric(humanText: "Vitamin E", databaseString: "dietaryVitaminE", category: .Nutrition, hkQuantityTypeIdentifier: .dietaryVitaminE),
             QuantityHealthKitMetric(humanText: "Vitamin K", databaseString: "dietaryVitaminK", category: .Nutrition, hkQuantityTypeIdentifier: .dietaryVitaminK),
-            QuantityHealthKitMetric(humanText: "Water", databaseString: "water", category: .Nutrition, hkQuantityTypeIdentifier: .dietaryWater),
+            QuantityHealthKitMetric(humanText: "Water", databaseString: "water", category: .Nutrition, hkQuantityTypeIdentifier: .dietaryWater, precision: [HKUnit.fluidOunceUS(): 1]),
             
             // Sleep
             TimeInBedHealthKitMetric(humanText: "Time in bed", databaseString: "timeInBed", category: .Sleep),
diff --git a/BeeKit/HeathKit/HealthKitMetric.swift b/BeeKit/HeathKit/HealthKitMetric.swift
index d952ac75..b0ae5db3 100644
--- a/BeeKit/HeathKit/HealthKitMetric.swift
+++ b/BeeKit/HeathKit/HealthKitMetric.swift
@@ -20,6 +20,7 @@ public protocol HealthKitMetric {
     var humanText : String { get }
     var databaseString : String { get }
     var category : HealthKitCategory { get }
+    var precision : [HKUnit: Int] { get }
 
     /// The permission required for this connection to read data from HealthKit
     func permissionType() -> HKObjectType
@@ -41,3 +42,13 @@ public protocol HealthKitMetric {
     /// The units this metric returns its datapoint values in
     func units(healthStore : HKHealthStore) async throws -> HKUnit
 }
+
+extension HealthKitMetric {
+    func applyPrecision(value: Double, unit: HKUnit) -> Double {
+        if let unitPrecision = precision[unit] {
+            let roundingFactor = pow(10.0, Double(unitPrecision))
+            return round(value * roundingFactor) / roundingFactor
+        }
+        return value
+    }
+}
diff --git a/BeeKit/HeathKit/QuantityHealthKitMetric.swift b/BeeKit/HeathKit/QuantityHealthKitMetric.swift
index 6656a382..3ee8d07c 100644
--- a/BeeKit/HeathKit/QuantityHealthKitMetric.swift
+++ b/BeeKit/HeathKit/QuantityHealthKitMetric.swift
@@ -116,10 +116,7 @@ class QuantityHealthKitMetric : HealthKitMetric {
                 continue
             }
 
-            if let unitPrecision = precision[unit] {
-                let roundingFactor = pow(10.0, Double(unitPrecision))
-                datapointValue = round(datapointValue * roundingFactor) / roundingFactor
-            }
+            datapointValue = applyPrecision(value: datapointValue, unit: unit)
 
             let id = "apple-health-" + daystamp.description
             results.append(NewDataPoint(requestid: id, daystamp: daystamp, value: NSNumber(value: datapointValue), comment: "Auto-entered via Apple Health"))
diff --git a/BeeKit/HeathKit/WorkoutMinutesHealthKitMetric.swift b/BeeKit/HeathKit/WorkoutMinutesHealthKitMetric.swift
index ecc4bc7d..653f1578 100644
--- a/BeeKit/HeathKit/WorkoutMinutesHealthKitMetric.swift
+++ b/BeeKit/HeathKit/WorkoutMinutesHealthKitMetric.swift
@@ -5,6 +5,8 @@ import OSLog
 public class WorkoutMinutesHealthKitMetric : CategoryHealthKitMetric {
     private let logger = Logger(subsystem: "com.beeminder.beeminder", category: "WorkoutMinutesHealthKitMetric")
     let minuteInSeconds = 60.0
+    
+    public override var precision: [HKUnit: Int] { return [HKUnit.minute(): 1] }
 
 
     init(humanText: String, databaseString: String, category: HealthKitCategory) {
@@ -16,7 +18,7 @@ public class WorkoutMinutesHealthKitMetric : CategoryHealthKitMetric {
         let samplesOnDay = samples.filter{sample in sample.startDate >= startOfDate}
         let workouts = samplesOnDay.compactMap({sample in sample as? HKWorkout})
         let workoutMinutes = workouts.map{sample in sample.duration / minuteInSeconds}.reduce(0, +)
-        return Double(workoutMinutes)
+        return applyPrecision(value: Double(workoutMinutes), unit: HKUnit.minute())
     }
     
     public override func recentDataPoints(days: Int, deadline: Int, healthStore: HKHealthStore, autodataConfig: [String: Any]) async throws -> [BeeDataPoint] {
@@ -40,7 +42,7 @@ public class WorkoutMinutesHealthKitMetric : CategoryHealthKitMetric {
             let workouts = samples.compactMap { $0 as? HKWorkout }
             
             for workout in workouts {
-                let workoutMinutes = workout.duration / minuteInSeconds
+                let workoutMinutes = applyPrecision(value: workout.duration / minuteInSeconds, unit: HKUnit.minute())
                 let workoutDescription = formatWorkoutDescription(workout: workout)
                 let id = "apple-health-workout-\(workout.uuid.uuidString)"