diff --git a/app.json b/app.json
index 231e1f9..504ef7d 100644
--- a/app.json
+++ b/app.json
@@ -17,8 +17,11 @@
         "NSCameraUsageDescription": "应用需要使用相机以拍摄您的体态照片用于AI测评。",
         "NSPhotoLibraryUsageDescription": "应用需要访问相册以选择您的体态照片用于AI测评。",
         "NSPhotoLibraryAddUsageDescription": "应用需要写入相册以保存拍摄的体态照片（可选）。",
+        "NSUserNotificationsUsageDescription": "应用需要发送通知以提醒您喝水和站立活动。",
         "UIBackgroundModes": [
-          "processing"
+          "processing",
+          "fetch",
+          "remote-notification"
         ]
       }
     },
@@ -55,7 +58,7 @@
         "react-native-health",
         {
           "enableHealthAPI": true,
-          "healthSharePermission": "应用需要访问您的健康数据（步数与能量消耗）以展示运动统计。",
+          "healthSharePermission": "应用需要访问您的健康数据（步数、能量消耗、心率变异性等）以展示运动统计和压力分析。",
           "healthUpdatePermission": "应用需要更新您的健康数据（体重信息）以记录您的健身进度。"
         }
       ],
diff --git a/app/(tabs)/statistics.tsx b/app/(tabs)/statistics.tsx
index 8ece39b..7450afb 100644
--- a/app/(tabs)/statistics.tsx
+++ b/app/(tabs)/statistics.tsx
@@ -17,7 +17,7 @@ import { fetchDailyMoodCheckins, selectLatestMoodRecordByDate } from '@/store/mo
 import { fetchDailyNutritionData, selectNutritionSummaryByDate } from '@/store/nutritionSlice';
 import { fetchTodayWaterStats, selectTodayStats } from '@/store/waterSlice';
 import { getMonthDaysZh, getTodayIndexInMonth } from '@/utils/date';
-import { ensureHealthPermissions, fetchHealthDataForDate } from '@/utils/health';
+import { ensureHealthPermissions, fetchHealthDataForDate, testHRVDataFetch } from '@/utils/health';
 import { getTestHealthData } from '@/utils/mockHealthData';
 import { calculateNutritionGoals } from '@/utils/nutrition';
 import { useBottomTabBarHeight } from '@react-navigation/bottom-tabs';
@@ -460,15 +460,27 @@ export default function ExploreScreen() {
 
             {/* 开发环境调试按钮 */}
             {__DEV__ && (
-              <TouchableOpacity
-                style={styles.debugButton}
-                onPress={async () => {
-                  console.log('🔧 手动触发后台任务测试...');
-                  // await backgroundTaskManager.triggerTaskForTesting();
-                }}
-              >
-                <Text style={styles.debugButtonText}>🔧</Text>
-              </TouchableOpacity>
+              <View style={styles.debugButtonsContainer}>
+                <TouchableOpacity
+                  style={styles.debugButton}
+                  onPress={async () => {
+                    console.log('🔧 手动触发后台任务测试...');
+                    // await backgroundTaskManager.triggerTaskForTesting();
+                  }}
+                >
+                  <Text style={styles.debugButtonText}>🔧</Text>
+                </TouchableOpacity>
+
+                <TouchableOpacity
+                  style={[styles.debugButton, styles.hrvTestButton]}
+                  onPress={async () => {
+                    console.log('🫀 测试HRV数据获取...');
+                    await testHRVDataFetch();
+                  }}
+                >
+                  <Text style={styles.debugButtonText}>🫀</Text>
+                </TouchableOpacity>
+              </View>
             )}
           </View>
         </View>
@@ -665,6 +677,10 @@ const styles = StyleSheet.create({
     fontWeight: '500',
     color: '#192126',
   },
+  debugButtonsContainer: {
+    flexDirection: 'row',
+    gap: 8,
+  },
   debugButton: {
     width: 32,
     height: 32,
@@ -681,6 +697,9 @@ const styles = StyleSheet.create({
     shadowRadius: 4,
     elevation: 3,
   },
+  hrvTestButton: {
+    backgroundColor: '#8B5CF6',
+  },
   debugButtonText: {
     fontSize: 12,
   },
diff --git a/components/StressMeter.tsx b/components/StressMeter.tsx
index 5ee464a..e7c5b69 100644
--- a/components/StressMeter.tsx
+++ b/components/StressMeter.tsx
@@ -82,7 +82,7 @@ export function StressMeter({ value, updateTime, style, hrvValue }: StressMeterP
         {/* 数值显示区域 */}
         <View style={styles.valueSection}>
           <Text style={styles.value}>{stressIndex === null ? '--' : stressIndex}</Text>
-          <Text style={styles.unit}>ms</Text>
+          <Text style={styles.unit}>%</Text>
         </View>
 
         {/* 进度条区域 */}
diff --git a/ios/WaterWidgetExtension.entitlements b/ios/WaterWidgetExtension.entitlements
new file mode 100644
index 0000000..0c67376
--- /dev/null
+++ b/ios/WaterWidgetExtension.entitlements
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict/>
+</plist>
diff --git a/ios/digitalpilates/Info.plist b/ios/digitalpilates/Info.plist
index a7c4107..8f1c6a9 100644
--- a/ios/digitalpilates/Info.plist
+++ b/ios/digitalpilates/Info.plist
@@ -4,7 +4,7 @@
 <dict>
 	<key>BGTaskSchedulerPermittedIdentifiers</key>
 	<array>
-		<string>com.anonymous.digitalpilates.backgroundfetch</string>
+		<string>background-health-reminders</string>
 	</array>
 	<key>CADisableMinimumFrameDurationOnPhone</key>
 	<true/>
@@ -23,7 +23,7 @@
 	<key>CFBundlePackageType</key>
 	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.0.7</string>
+	<string>1.0.8</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleURLTypes</key>
@@ -54,13 +54,15 @@
 	<key>NSCameraUsageDescription</key>
 	<string>应用需要使用相机以实现相关功能</string>
 	<key>NSHealthShareUsageDescription</key>
-	<string>应用需要访问您的健康数据（步数与能量消耗）以展示运动统计。</string>
+	<string>应用需要访问您的健康数据（步数、能量消耗、心率变异性等）以展示运动统计和压力分析。</string>
 	<key>NSHealthUpdateUsageDescription</key>
 	<string>应用需要更新您的健康数据（体重信息）以记录您的健身进度。</string>
 	<key>NSPhotoLibraryAddUsageDescription</key>
 	<string>应用需要写入相册以保存拍摄的体态照片（可选）。</string>
 	<key>NSPhotoLibraryUsageDescription</key>
 	<string>应用需要访问相册以选择您的体态照片用于AI测评。</string>
+	<key>NSUserNotificationsUsageDescription</key>
+	<string>应用需要发送通知以提醒您喝水和站立活动。</string>
 	<key>NSUserActivityTypes</key>
 	<array>
 		<string>$(PRODUCT_BUNDLE_IDENTIFIER).expo.index_route</string>
@@ -68,7 +70,8 @@
 	<key>UIBackgroundModes</key>
 	<array>
 		<string>processing</string>
-    <string>fetch</string>
+		<string>fetch</string>
+		<string>remote-notification</string>
 	</array>
 	<key>UILaunchStoryboardName</key>
 	<string>SplashScreen</string>
diff --git a/services/backgroundTaskManager.ts b/services/backgroundTaskManager.ts
index c8eb95d..71af81a 100644
--- a/services/backgroundTaskManager.ts
+++ b/services/backgroundTaskManager.ts
@@ -3,6 +3,7 @@ import { StandReminderHelpers, WaterNotificationHelpers } from '@/utils/notifica
 import AsyncStorage from '@react-native-async-storage/async-storage';
 import * as BackgroundTask from 'expo-background-task';
 import * as TaskManager from 'expo-task-manager';
+import { TaskManagerTaskBody } from 'expo-task-manager';
 
 /**
  * 后台任务标识符
@@ -14,7 +15,7 @@ export const BACKGROUND_TASK_IDS = {
 } as const;
 
 // 定义后台任务
-TaskManager.defineTask(BACKGROUND_TASK_IDS.HEALTH_REMINDERS, async () => {
+TaskManager.defineTask(BACKGROUND_TASK_IDS.HEALTH_REMINDERS, async (body: TaskManagerTaskBody) => {
   try {
     console.log('[BackgroundTask] 后台任务执行');
     await executeBackgroundTasks();
diff --git a/utils/health.ts b/utils/health.ts
index 486807d..c96881c 100644
--- a/utils/health.ts
+++ b/utils/health.ts
@@ -452,22 +452,43 @@ async function fetchSleepDuration(options: HealthDataOptions): Promise<number> {
 
 async function fetchHeartRateVariability(options: HealthDataOptions): Promise<number | null> {
   return new Promise((resolve) => {
+    console.log('=== 开始获取HRV数据 ===');
+    console.log('查询选项:', options);
+
     AppleHealthKit.getHeartRateVariabilitySamples(options, (err, res) => {
+      console.log('HRV API调用结果:', { err, res });
+
       if (err) {
         logError('HRV数据', err);
+        console.error('HRV获取错误详情:', err);
         return resolve(null);
       }
+
       if (!res || !Array.isArray(res) || res.length === 0) {
         logWarning('HRV', '为空或格式错误');
+        console.warn('HRV数据为空，原始响应:', res);
         return resolve(null);
       }
+
       logSuccess('HRV', res);
+      console.log('HRV数据样本数量:', res.length);
+
+      // 打印最新的几个样本用于调试
+      const latestSamples = res.slice(-3);
+      console.log('最新的HRV样本:', latestSamples.map(sample => ({
+        value: sample.value,
+        startDate: sample.startDate,
+        endDate: sample.endDate
+      })));
 
       const latestHrv = res[res.length - 1];
-      if (latestHrv && latestHrv.value) {
+      if (latestHrv && latestHrv.value !== undefined && latestHrv.value !== null) {
         // HealthKit 中的 HRV 数据已经是毫秒单位，无需转换
-        resolve(Math.round(latestHrv.value));
+        const hrvValue = Math.round(latestHrv.value);
+        console.log('最终HRV值:', hrvValue);
+        resolve(hrvValue);
       } else {
+        console.warn('HRV样本值无效:', latestHrv);
         resolve(null);
       }
     });
@@ -681,6 +702,41 @@ export async function fetchRecentHRV(hoursBack: number = 2): Promise<number | nu
   return fetchHeartRateVariability(options);
 }
 
+// 测试HRV数据获取功能
+export async function testHRVDataFetch(date: Date = dayjs().toDate()): Promise<void> {
+  console.log('=== 开始测试HRV数据获取 ===');
+
+  try {
+    // 首先确保权限
+    const hasPermission = await ensureHealthPermissions();
+    if (!hasPermission) {
+      console.error('没有健康数据权限，无法测试HRV');
+      return;
+    }
+
+    console.log('权限检查通过，开始获取HRV数据...');
+
+    // 测试不同时间范围的HRV数据
+    const options = createDateRange(date);
+
+    // 获取今日HRV
+    const todayHRV = await fetchHeartRateVariability(options);
+    console.log('今日HRV结果:', todayHRV);
+
+    // 获取最近2小时HRV
+    const recentHRV = await fetchRecentHRV(2);
+    console.log('最近2小时HRV结果:', recentHRV);
+
+    // 获取指定日期HRV
+    const dateHRV = await fetchHRVForDate(date);
+    console.log('指定日期HRV结果:', dateHRV);
+
+    console.log('=== HRV数据测试完成 ===');
+  } catch (error) {
+    console.error('HRV测试过程中出现错误:', error);
+  }
+}
+
 // 更新healthkit中的体重
 export async function updateWeight(weight: number) {
   return new Promise((resolve) => {