diff --git a/app/controllers/meals_controller.rb b/app/controllers/meals_controller.rb
index 915f6ff..a7de62d 100644
--- a/app/controllers/meals_controller.rb
+++ b/app/controllers/meals_controller.rb
@@ -92,9 +92,10 @@ class MealsController < ApplicationController
         [i, [n_amount && n_amount * i.amount / i.food.ref_amount, n_unit]]
       end.to_h
       max_value = @nutrients[q].values.max_by { |a, u| a || 0 }.first
-      @nutrients[q][:mfu_unit] = @nutrients[q].values.map(&:last)
-        .each_with_object(Hash.new(0)) { |u, h| h[u] += 1 }.max_by(&:last).first
-      @nutrients[q][:precision] = [3 - max_value.exponent, 0].max
+
+      @nutrients[q][:mfu_unit] = @nutrients[q]
+        .each_with_object(Hash.new(0)) { |(i, v), h| h[v.last] += 1 }.max_by(&:last).first
+      @nutrients[q][:precision] = max_value && [3 - max_value.exponent, 0].max
     end
 
     @meals_by_date = @project.meals.reject { |m,*| m.new_record? }
diff --git a/app/helpers/body_trackers_helper.rb b/app/helpers/body_trackers_helper.rb
index 9e47de2..bcd85cd 100644
--- a/app/helpers/body_trackers_helper.rb
+++ b/app/helpers/body_trackers_helper.rb
@@ -19,13 +19,17 @@ module BodyTrackersHelper
   end
 
   def toggle_exposure_options(enabled, domain)
-    disabled = []
-    enabled = enabled.to_a
-    options = nested_set_options(@project.quantities.send(domain)) do |q|
-      disabled << q.id if enabled.include?(q)
+    enabled = enabled.map { |q| [q.name, q.id] }
+    enabled_ids = enabled.map(&:last)
+
+    options = [[t('body_trackers.helpers.exposures_available'), 0]]
+    options += nested_set_options(@project.quantities.send(domain)) do |q|
       raw("#{'&ensp;' * q.level}#{q.name}")
     end
-    options_for_select(options, disabled: disabled)
+    options.collect! { |name, id| [name, enabled_ids.include?(id) ? 0 : id] }
+
+    options = [[t('body_trackers.helpers.exposures_enabled'), 0]] + enabled + options
+    options_for_select(options, disabled: 0)
   end
 
   def unit_options
diff --git a/app/views/meals/_index.html.erb b/app/views/meals/_index.html.erb
index 0548736..d3c2755 100644
--- a/app/views/meals/_index.html.erb
+++ b/app/views/meals/_index.html.erb
@@ -10,23 +10,27 @@
       <% total_width = 4 + @quantities.length %>
       <% @meals_by_date.reverse_each do |date, meals| %>
         <tr id="date-<%= date.strftime('%Y%m%d') %>" class="date">
-          <td class="date" colspan="2" style="width:<%= 3 * 100/total_width %>%">
+          <td class="date" colspan="2" style="width:<%= 3 * 100/total_width %>%" rowspan="2">
             <h3><%= date == Date.current ? 'Today' : date.strftime('%F') %></h3>
           </td>
-          <td style="width:<%= 100/total_width %>%; text-align: left;">
+          <td style="width:<%= 100/total_width %>%; text-align: left;" rowspan="2">
             <b><%= l(:field_amount) %></b>
           </td>
           <% @quantities.each do |q| %>
-            <td style="width:<%= 100/total_width %>%; text-align: left;" class="closable">
-              <div style="float: right; position: relative;">
-                <%= link_to '',
-                  toggle_exposure_project_meals_path(@project, quantity_id: q.id),
-                  {class: "icon icon-close", method: :post, remote: true} %>
-              </div>
-              <b><%= q.name %></b>
+            <td class="quantityhead closable" style="width: <%= 100/total_width %>%;"
+                title="<%= q.description %>">
+              <%= q.name %>
+            </td>
+          <% end %>
+          <td style="width:<%= 100/total_width %>%" rowspan="2"></td>
+        </tr>
+        <tr>
+          <% @quantities.each do |q| %>
+            <td class="quantityhead" style="width: <%= 100/total_width %>%;">
+              <% mfu_unit = @nutrients[q][:mfu_unit] %>
+              <%= "[#{ mfu_unit ? mfu_unit.shortname : '-'}]" %>
             </td>
           <% end %>
-          <td style="width:<%= 100/total_width %>%"></td>
         </tr>
 
         <% meals.each_with_index do |m, index| %>
diff --git a/app/views/meals/_options.html.erb b/app/views/meals/_options.html.erb
index 06d0496..897f000 100644
--- a/app/views/meals/_options.html.erb
+++ b/app/views/meals/_options.html.erb
@@ -10,7 +10,7 @@
           <td style="width:100%"></td>
           <td><%= select_tag 'quantity_id',
             toggle_exposure_options(@project.meal_quantities, :diet) %></td>
-          <td><%= submit_tag l(:button_add) %></td>
+          <td><%= submit_tag l(:button_toggle) %></td>
         </tr>
       </table>
     <% end %>
diff --git a/assets/stylesheets/body_tracking.css b/assets/stylesheets/body_tracking.css
index db79efb..b33ed55 100644
--- a/assets/stylesheets/body_tracking.css
+++ b/assets/stylesheets/body_tracking.css
@@ -5,11 +5,18 @@ table.list tr.food.hidden {opacity: 0.4}
 table.list .date,
 table.list .name,
 table.list .quantity {text-align: left;}
+/* TODO: merge with .closable */
+table.list .quantityhead {
+  text-align: center;
+  vertical-align: bottom;
+  position: relative;
+  padding: 2px 0;
+}
 
 table.list .action,
 table.list .value {text-align: right;}
 
-table.list th.closable {padding-right: 0;}
+table.list .closable {padding-right: 0;}
 table.list .unwrappable {white-space: nowrap;}
 table.list .ellipsible {
   overflow: hidden;
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 2e0670d..b304df1 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -23,6 +23,7 @@ en:
   button_notes: 'Notes'
   button_retake: 'Retake'
   button_child: 'Child'
+  button_toggle: 'Toggle'
   activerecord:
     errors:
       models:
@@ -56,6 +57,9 @@ en:
   body_trackers:
     index:
       heading: 'Summary'
+    helpers:
+      exposures_enabled: '--- enabled ---'
+      exposures_available: '--- available ---'
   layouts:
     sidebar:
       heading_body_trackers: 'Body trackers'