<%= form_for([:admin, @muscle]) do |f| %>
  <%= render 'shared/form_errors', :object=>@muscle %>

  <div class="field">
    <%= f.label :name %><br />
    <%= f.text_field :name %>
  </div>  
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>
<p><%= link_to "Back to List", admin_muscles_path %></p>