diff --git a/charts.tex b/charts.tex
index 99590c3053cff7c7a931b52743c6b93e67a5c37f..7ee922516aebd083a191bff038d3ba6a74fc7f64 100644
--- a/charts.tex
+++ b/charts.tex
@@ -190,7 +190,7 @@
 
     Fighting & Each round inflicts 1 \gls{fatigue}. \\
 
-    Holding Breath & 1 \gls{fatigue} per round. \\
+    Holding Breath & 1 \gls{fatigue} per negative \glspl{ap}. \\
 
     Marching & 1 \gls{fatigue} per mile. \index{Marching}\\
 
diff --git a/combat.tex b/combat.tex
index 6f432303edacae99042cbbe652244afb26129ac2..757f138a4a9f500d8cbccfab40580a4eb2843a37 100644
--- a/combat.tex
+++ b/combat.tex
@@ -597,11 +597,14 @@ Attacks against a \textit{Prone} target gain a +2 bonus.
 However, they can get up as by spending 1 \gls{ap}.
 
 \subsubsection[+1 to attack]{Higher Ground}
-\index{Prone}
-\label{prone}
 
 Gaining the higher ground grants +1 to the Attack Bonus, as you target the enemy's head easier and gravity aids your downward swings.
 
+\subsubsection[Holding Breath: 1 \glsentrytext{fatigue} per negative \glsentrytext{ap} at the end of the round]{Holding Breath}
+
+Anyone holding their breath takes a number of \glspl{fatigue} equal to their negative \glspl{ap} at the end of the round.
+So someone ending a round on -3 \glspl{ap} would take 3 \glspl{fatigue}.
+
 \subsection{Manoeuvres}
 
 These additional actions cover different ways to engage with enemies.
diff --git a/main.tex b/main.tex
index 9587920b902e8d3d55b0558c6fc7c14ee58bc936..0509b4a5c6c130dabe891ec13c193ab19b32d270 100644
--- a/main.tex
+++ b/main.tex
@@ -43,6 +43,8 @@ Keywords={TTRPG,RPG,roleplaying}
 
 \backmatter
 
+\backmatter
+
 \input{appendix.tex}
 
 \end{document}