diff --git a/health.md b/health.md
index 6d3980c5a..84d9c6ff7 100644
--- a/health.md
+++ b/health.md
@@ -2,3 +2,9 @@
 
 This view will help you to find any bottleneck or to compare the metrics of your infrastructure.
 
+### Heatmap
+
+A heatmap allows its reader to understand when your VMs or hosts are stressed. Values are relative, thus it's easy to detect trends or spikes.
+
+[![](https://xen-orchestra.com/blog/content/images/2015/08/db1.png)](https://xen-orchestra.com/blog/xen-orchestra-4-4/#heatmapforinfrastructurehealth).
+