diff --git a/zed_workouts/tracker/templates/tracker/index.html b/zed_workouts/tracker/templates/tracker/index.html
index a95daab..ccd7f22 100644
--- a/zed_workouts/tracker/templates/tracker/index.html
+++ b/zed_workouts/tracker/templates/tracker/index.html
@@ -63,6 +63,34 @@
 
         <button class="btn btn-warning mb-4" onclick="saveBlock()">Save Block (Clear Table)</button>
 
+        <hr class="my-4">
+        
+        <!-- SECTION 3.5: Ad-Hoc Input -->
+        <h4>Add Extra Exercise (4 Sets)</h4>
+        <div class="row mb-3">
+            <div class="col-md-6">
+                <label>Select Exercise</label>
+                <select id="adhocSelect" class="form-select" onchange="generateAdhocRows()">
+                    <option value="">Select...</option>
+                </select>
+            </div>
+        </div>
+        <table class="table table-bordered">
+            <thead class="table-dark">
+                <tr>
+                    <th>Exercise</th>
+                    <th>Group</th>
+                    <th>Set</th>
+                    <th>Reps</th>
+                    <th>Weight</th>
+                    <th>Notes</th>
+                </tr>
+            </thead>
+            <tbody id="adhocTableBody"></tbody>
+        </table>
+        <button class="btn btn-warning mb-4" onclick="saveAdhocBlock()">Save Extra Exercise</button>
+        <hr class="my-4">
+
         <!-- SECTION 4: Final Submission -->
         <form method="POST">
             {% csrf_token %}
@@ -119,6 +147,19 @@
             });
         }
 
+        function populateAdhocDropdown() {
+            const select = document.getElementById('adhocSelect');
+            const sorted = [...exercises].sort((a,b) => a.exercise.localeCompare(b.exercise));
+            sorted.forEach(ex => {
+                const opt = document.createElement('option');
+                opt.value = ex.exercise;
+                opt.text = ex.exercise;
+                opt.dataset.type = ex.type;
+                opt.dataset.group = ex.group;
+                select.appendChild(opt);
+            });
+        }
+
         function loadTemplateData(templateName) {
             const tbody = document.getElementById('activeTableBody');
             tbody.innerHTML = '';
@@ -194,8 +235,44 @@
             }
         }
 
+        function generateAdhocRows() {
+            const select = document.getElementById('adhocSelect');
+            const tbody = document.getElementById('adhocTableBody');
+            tbody.innerHTML = '';
+            
+            if (!select.value) return;
+            
+            const opt = select.options[select.selectedIndex];
+            const exName = select.value;
+            const gr = opt.dataset.group;
+            const ty = opt.dataset.type;
+
+            for (let set = 1; set <= 4; set++) {
+                const row = `
+                    <tr>
+                        <td>${exName}<input type="hidden" class="d-ex" value="${exName}"></td>
+                        <td>${gr}<input type="hidden" class="d-gr" value="${gr}">
+                            <input type="hidden" class="d-ty" value="${ty}"></td>
+                        <td>${set}<input type="hidden" class="d-st" value="${set}"></td>
+                        <td><input type="number" class="table-input d-rp" value="0"></td>
+                        <td><input type="number" class="table-input d-wt" step="0.5" value="0"></td>
+                        <td><input type="text" class="table-input d-nt" value="" placeholder="Notes"></td>
+                    </tr>`;
+                tbody.insertAdjacentHTML('beforeend', row);
+            }
+        }
+
         function saveBlock() {
-            const activeBody = document.getElementById('activeTableBody');
+            processSaveBlock('activeTableBody');
+        }
+
+        function saveAdhocBlock() {
+            processSaveBlock('adhocTableBody');
+            document.getElementById('adhocSelect').value = '';
+        }
+
+        function processSaveBlock(tableId) {
+            const activeBody = document.getElementById(tableId);
             const logBody = document.getElementById('logTableBody');
             const hiddenDiv = document.getElementById('hiddenInputs');
             
@@ -229,6 +306,8 @@
             // Clear Active Table
             activeBody.innerHTML = '';
         }
+
+        populateAdhocDropdown();
     </script>
 </body>
 </html>