diff --git a/templates/includes/macros.html.tera b/templates/includes/macros.html.tera
index 7d53179..fdd4d70 100644
--- a/templates/includes/macros.html.tera
+++ b/templates/includes/macros.html.tera
@@ -19,6 +19,29 @@
           {% include "includes/question-icon" %}
           <span class="sr-only">FAQs</span>
         </a>
+        {% if loggedin_user.is_guest and loggedin_user.weight and loggedin_user.sex and loggedin_user.dob %}
+          <a
+            href="#"
+            class="inline-flex justify-center rounded-md bg-primary-600 mx-1 px-3 py-2 text-sm font-semibold text-white hover:bg-primary-500 focus-visible:outline focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-primary-600 cursor-pointer"
+            data-sidebar="true"
+            data-trigger="sidebar"
+            data-header="Ergo Challenge"
+            data-body="#mobile-menu-guest"
+          >
+            {% include "includes/book" %}
+            <span class="sr-only">Ergo</span>
+          </a>
+          <div class="hidden">
+            <div id="mobile-menu-guest">
+              <a
+                href="/ergo"
+                class="block w-100 py-2 hover:text-primary-600 border-t"
+              >
+                Ergo
+              </a>
+            </div>
+          </div>
+	      {% endif %}
         {% if not loggedin_user.is_guest %}
         <a
           href="#"