diff --git a/scripts/health-sync.js b/scripts/health-sync.js
index f72423a..0bcd549 100644
--- a/scripts/health-sync.js
+++ b/scripts/health-sync.js
@@ -16,10 +16,15 @@ async function readLatest(type, unit) {
     h.setLimit(1);
     h.setDescendingSorting();
     const samples = await h.quantitySamples();
-    if (!samples || samples.length === 0) return null;
+    if (!samples || samples.length === 0) {
+      console.log(`readLatest(${type}): no samples`);
+      return null;
+    }
     const s = samples[0];
+    console.log(`readLatest(${type}): value=${s.value} date=${s.startDate}`);
     return { value: s.value, startDate: new Date(s.startDate) };
   } catch (e) {
+    console.log(`readLatest(${type}): error ${e}`);
     return null;
   }
 }
@@ -33,14 +38,19 @@ async function readTodaySum(type, unit) {
     h.setTypeIdentifier(type);
     h.setUnit(unit);
     const samples = await h.quantitySamples();
-    if (!samples || samples.length === 0) return null;
+    if (!samples || samples.length === 0) {
+      console.log(`readTodaySum(${type}): no samples`);
+      return null;
+    }
     let total = 0;
     for (const s of samples) {
       const sd = new Date(s.startDate);
       if (sd >= start) total += s.value;
     }
+    console.log(`readTodaySum(${type}): total=${total}`);
     return total;
   } catch (e) {
+    console.log(`readTodaySum(${type}): error ${e}`);
     return null;
   }
 }
@@ -50,6 +60,7 @@ function todayDate() {
 }
 
 async function notify(body) {
+  console.log(`notify: ${body}`);
   const n = new Notification();
   n.title = "Health Sync";
   n.body = body;
@@ -57,6 +68,8 @@ async function notify(body) {
 }
 
 // --- Read all health metrics ---
+console.log("=== Health Sync starting ===");
+
 const weight = await readLatest("bodyMass", "kg");
 const bpSys = await readLatest("bloodPressureSystolic", "mmHg");
 const bpDia = await readLatest("bloodPressureDiastolic", "mmHg");
@@ -65,6 +78,8 @@ const restingHr = await readLatest("restingHeartRate", "count/min");
 const steps = await readTodaySum("stepCount", "count");
 const spo2 = await readLatest("oxygenSaturation", "%");
 
+console.log(`Results: weight=${weight?.value} bpSys=${bpSys?.value} bpDia=${bpDia?.value} hr=${hr?.value} rhr=${restingHr?.value} steps=${steps} spo2=${spo2?.value}`);
+
 // --- Build samples array — only include metrics that have data ---
 const samples = [];
 
@@ -124,6 +139,8 @@ if (spo2) {
   });
 }
 
+console.log(`Total samples to send: ${samples.length}`);
+
 // --- POST to server ---
 if (samples.length === 0) {
   await notify("No health data found today");
@@ -139,9 +156,12 @@ req.body = JSON.stringify({ samples: samples });
 
 try {
   const res = await req.loadJSON();
-  await notify(`✓ Sent ${res.ingested || samples.length} samples`);
+  console.log(`Server response: ${JSON.stringify(res)}`);
+  await notify(`Sent ${res.ingested || samples.length} samples`);
 } catch (e) {
-  await notify(`✗ Error: ${e.message || e}`);
+  console.log(`POST error: ${e}`);
+  await notify(`Error: ${e.message || e}`);
 }
 
-} // end else
\ No newline at end of file
+} // end else
+console.log("=== Health Sync done ===");
\ No newline at end of file