diff --git a/README.md b/README.md
index 282292a..dc31087 100644
--- a/README.md
+++ b/README.md
@@ -34,3 +34,5 @@ ALLOW_DANGEROUS=1 FORK_BOMB_SECONDS=5 MAX_LIMIT_SECONDS=5 bash run_all_experimen
   risk data loss if the system becomes unstable.
 
 If you are unsure, do not enable the dangerous tests.
+
+It is very important to run above test in virtual machine to avoid some of the potential dangers
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