diff --git a/src/models/WorkoutSession.ts b/src/models/WorkoutSession.ts
index f077dfd..8565eec 100644
--- a/src/models/WorkoutSession.ts
+++ b/src/models/WorkoutSession.ts
@@ -31,7 +31,7 @@ export interface ICompletedExercise {
 
 export interface IPr {
   exerciseId: string;
-  type: string; // 'est1rm' | 'maxWeight' | 'repMax'
+  type: string; // 'est1rm' | 'maxWeight' | 'bestSetVolume' | 'repMax'
   value: number;
   reps?: number;
 }
diff --git a/src/routes/api/fitness/sessions/+server.ts b/src/routes/api/fitness/sessions/+server.ts
index 6242267..7cc62c0 100644
--- a/src/routes/api/fitness/sessions/+server.ts
+++ b/src/routes/api/fitness/sessions/+server.ts
@@ -100,8 +100,12 @@ export const POST: RequestHandler = async ({ request, locals }) => {
         'exercises.exerciseId': ex.exerciseId,
       }).sort({ startTime: -1 }).limit(50).lean();
 
+      const isBilateral = exercise?.bilateral ?? false;
+      const weightMul = isBilateral ? 2 : 1;
+
       let prevBestWeight = 0;
       let prevBestEst1rm = 0;
+      let prevBestVolume = 0;
       for (const ps of prevSessions) {
         const pe = ps.exercises.find((e) => e.exerciseId === ex.exerciseId);
         if (!pe) continue;
@@ -109,15 +113,18 @@ export const POST: RequestHandler = async ({ request, locals }) => {
           if (!s.completed || !s.weight || !s.reps) continue;
           prevBestWeight = Math.max(prevBestWeight, s.weight);
           prevBestEst1rm = Math.max(prevBestEst1rm, estimatedOneRepMax(s.weight, s.reps));
+          prevBestVolume = Math.max(prevBestVolume, s.weight * s.reps * weightMul);
         }
       }
 
       let bestWeight = 0;
       let bestEst1rm = 0;
+      let bestVolume = 0;
       for (const s of completedSets) {
         if (!s.weight || !s.reps) continue;
         bestWeight = Math.max(bestWeight, s.weight);
         bestEst1rm = Math.max(bestEst1rm, estimatedOneRepMax(s.weight, s.reps));
+        bestVolume = Math.max(bestVolume, s.weight * s.reps * weightMul);
       }
 
       if (bestWeight > prevBestWeight && prevBestWeight > 0) {
@@ -126,6 +133,9 @@ export const POST: RequestHandler = async ({ request, locals }) => {
       if (bestEst1rm > prevBestEst1rm && prevBestEst1rm > 0) {
         prs.push({ exerciseId: ex.exerciseId, type: 'est1rm', value: bestEst1rm });
       }
+      if (bestVolume > prevBestVolume && prevBestVolume > 0) {
+        prs.push({ exerciseId: ex.exerciseId, type: 'bestSetVolume', value: Math.round(bestVolume) });
+      }
     }
 
     const workoutSession = new WorkoutSession({
diff --git a/src/routes/api/fitness/sessions/[id]/recalculate/+server.ts b/src/routes/api/fitness/sessions/[id]/recalculate/+server.ts
index 3e69ce5..617b09f 100644
--- a/src/routes/api/fitness/sessions/[id]/recalculate/+server.ts
+++ b/src/routes/api/fitness/sessions/[id]/recalculate/+server.ts
@@ -76,8 +76,12 @@ export const POST: RequestHandler = async ({ params, locals }) => {
 				startTime: { $lt: workoutSession.startTime }
 			}).sort({ startTime: -1 }).limit(50).lean();
 
+			const isBilateral = exercise?.bilateral ?? false;
+			const weightMul = isBilateral ? 2 : 1;
+
 			let prevBestWeight = 0;
 			let prevBestEst1rm = 0;
+			let prevBestVolume = 0;
 			for (const ps of prevSessions) {
 				const pe = ps.exercises.find(e => e.exerciseId === ex.exerciseId);
 				if (!pe) continue;
@@ -85,15 +89,18 @@ export const POST: RequestHandler = async ({ params, locals }) => {
 					if (!s.completed || !s.weight || !s.reps) continue;
 					prevBestWeight = Math.max(prevBestWeight, s.weight);
 					prevBestEst1rm = Math.max(prevBestEst1rm, estimatedOneRepMax(s.weight, s.reps));
+					prevBestVolume = Math.max(prevBestVolume, s.weight * s.reps * weightMul);
 				}
 			}
 
 			let bestWeight = 0;
 			let bestEst1rm = 0;
+			let bestVolume = 0;
 			for (const s of completedSets) {
 				if (!s.weight || !s.reps) continue;
 				bestWeight = Math.max(bestWeight, s.weight);
 				bestEst1rm = Math.max(bestEst1rm, estimatedOneRepMax(s.weight, s.reps));
+				bestVolume = Math.max(bestVolume, s.weight * s.reps * weightMul);
 			}
 
 			if (bestWeight > prevBestWeight && prevBestWeight > 0) {
@@ -102,6 +109,9 @@ export const POST: RequestHandler = async ({ params, locals }) => {
 			if (bestEst1rm > prevBestEst1rm && prevBestEst1rm > 0) {
 				prs.push({ exerciseId: ex.exerciseId, type: 'est1rm', value: bestEst1rm });
 			}
+			if (bestVolume > prevBestVolume && prevBestVolume > 0) {
+				prs.push({ exerciseId: ex.exerciseId, type: 'bestSetVolume', value: Math.round(bestVolume) });
+			}
 		}
 
 		workoutSession.totalVolume = totalVolume > 0 ? totalVolume : undefined;
diff --git a/src/routes/fitness/[history=fitnessHistory]/[id]/+page.svelte b/src/routes/fitness/[history=fitnessHistory]/[id]/+page.svelte
index f114103..4f28e78 100644
--- a/src/routes/fitness/[history=fitnessHistory]/[id]/+page.svelte
+++ b/src/routes/fitness/[history=fitnessHistory]/[id]/+page.svelte
@@ -771,6 +771,7 @@
 						<span class="pr-type">
 							{#if pr.type === 'est1rm'}Est. 1RM
 							{:else if pr.type === 'maxWeight'}Max Weight
+							{:else if pr.type === 'bestSetVolume'}Best Set Volume
 							{:else if pr.type === 'repMax'}{pr.reps}-rep max
 							{:else}{pr.type}{/if}
 						</span>