diff --git a/code/game/atoms.dm b/code/game/atoms.dm
index 351216b8bf8..3253f272d0e 100644
--- a/code/game/atoms.dm
+++ b/code/game/atoms.dm
@@ -10,7 +10,7 @@
 	var/last_bumped = 0
 	var/pass_flags = 0
 	var/throwpass = 0
-	var/germ_level = 0 // The higher the germ level, the more germ on the atom.
+	var/germ_level = GERM_LEVEL_AMBIENT // The higher the germ level, the more germ on the atom.
 
 	///Chemistry.
 	var/datum/reagents/reagents = null
diff --git a/code/modules/mob/living/carbon/carbon.dm b/code/modules/mob/living/carbon/carbon.dm
index 0e6d130a568..441af0673d3 100644
--- a/code/modules/mob/living/carbon/carbon.dm
+++ b/code/modules/mob/living/carbon/carbon.dm
@@ -1,3 +1,10 @@
+/mob/living/carbon/Life()
+	..()
+	
+	// Increase germ_level regularly
+	if(germ_level < GERM_LEVEL_AMBIENT)	//if you're just standing there, you shouldn't get more germs beyond an ambient level
+		germ_level++	//increase by 1 per second
+
 /mob/living/carbon/Move(NewLoc, direct)
 	. = ..()
 	if(.)
@@ -7,6 +14,10 @@
 				src.nutrition -= HUNGER_FACTOR/10
 		if((FAT in src.mutations) && src.m_intent == "run" && src.bodytemperature <= 360)
 			src.bodytemperature += 2
+			
+		// Moving around increases germ_level faster
+		if(germ_level < GERM_LEVEL_MOVE_CAP && prob(1))
+			germ_level++
 
 /mob/living/carbon/relaymove(var/mob/user, direction)
 	if(user in src.stomach_contents)
diff --git a/code/modules/mob/living/carbon/human/examine.dm b/code/modules/mob/living/carbon/human/examine.dm
index 9cc0e22dfc8..ad2bd377db8 100644
--- a/code/modules/mob/living/carbon/human/examine.dm
+++ b/code/modules/mob/living/carbon/human/examine.dm
@@ -284,8 +284,8 @@
 					var/this_wound_desc = W.desc
 					if(W.bleeding()) this_wound_desc = "bleeding [this_wound_desc]"
 					else if(W.bandaged) this_wound_desc = "bandaged [this_wound_desc]"
-					if(W.germ_level > 1000) this_wound_desc = "badly infected [this_wound_desc]"
-					else if(W.germ_level > 100) this_wound_desc = "lightly infected [this_wound_desc]"
+					if(W.germ_level > GANGREN_LEVEL_TWO) this_wound_desc = "badly infected [this_wound_desc]"
+					else if(W.germ_level > 330) this_wound_desc = "lightly infected [this_wound_desc]"
 					if(this_wound_desc in wound_descriptors)
 						wound_descriptors[this_wound_desc] += W.amount
 						continue
diff --git a/code/modules/mob/living/carbon/human/life.dm b/code/modules/mob/living/carbon/human/life.dm
index 2640f85819e..c7cbbf5965f 100644
--- a/code/modules/mob/living/carbon/human/life.dm
+++ b/code/modules/mob/living/carbon/human/life.dm
@@ -1215,14 +1215,11 @@
 
 			if(druggy)
 				druggy = max(druggy-1, 0)
-/*
-			// Increase germ_level regularly
-			if(prob(40))
-				germ_level += 1
+
 			// If you're dirty, your gloves will become dirty, too.
 			if(gloves && germ_level > gloves.germ_level && prob(10))
 				gloves.germ_level += 1
-*/
+
 		return 1
 
 	proc/handle_regular_hud_updates()
diff --git a/code/modules/organs/organ.dm b/code/modules/organs/organ.dm
index 953676585b2..13823602b76 100644
--- a/code/modules/organs/organ.dm
+++ b/code/modules/organs/organ.dm
@@ -72,12 +72,18 @@
 			if(E.status & ORGAN_BROKEN && !(E.status & ORGAN_SPLINTED) )
 				broken = 1
 
+			if (!lying && world.time - l_move_time < 15)
 			//Moving around with fractured ribs won't do you any good
-			if (broken && E.internal_organs && prob(15))
-				if (!lying && world.time - l_move_time < 15)
+				if (broken && E.internal_organs && prob(15))
 					var/datum/organ/internal/I = pick(E.internal_organs)
 					custom_pain("You feel broken bones moving in your [E.display_name]!", 1)
 					I.take_damage(rand(3,5))
+				
+				//Moving makes open wounds get infected much faster
+				if (E.wounds.len)
+					for(var/datum/wound/W in E.wounds)
+						if (W.can_infect())
+							W.germ_level += 1
 
 			//Special effects for limbs.
 			if(E.name in list("l_hand","l_arm","r_hand","r_arm"))
diff --git a/code/modules/organs/organ_external.dm b/code/modules/organs/organ_external.dm
index acd9efcb659..992bf8ed7f1 100644
--- a/code/modules/organs/organ_external.dm
+++ b/code/modules/organs/organ_external.dm
@@ -295,7 +295,10 @@ This function completely restores a damaged organ to perfect condition.
 	if(last_dam != brute_dam + burn_dam) // Process when we are fully healed up.
 		last_dam = brute_dam + burn_dam
 		return 1
-	last_dam = brute_dam + burn_dam
+	else
+		last_dam = brute_dam + burn_dam
+	if(germ_level > GANGREN_LEVEL_ONE)
+		return 1
 	return 0
 
 /datum/organ/external/process()
@@ -331,31 +334,34 @@ This function completely restores a damaged organ to perfect condition.
 	return
 
 //Updating germ levels. Handles organ germ levels and necrosis.
-#define GANGREN_LEVEL_ONE		100
-#define GANGREN_LEVEL_TWO		1000
-#define GANGREN_LEVEL_TERMINAL	2500
-#define GERM_TRANSFER_AMOUNT	germ_level/500
+//#define GERM_TRANSFER_AMOUNT	germ_level/500
 /datum/organ/external/proc/update_germs()
 
-	if(status & ORGAN_ROBOT|ORGAN_DESTROYED) //Robotic limbs shouldn't be infected, nor should nonexistant limbs.
+	if(status & (ORGAN_ROBOT|ORGAN_DESTROYED)) //Robotic limbs shouldn't be infected, nor should nonexistant limbs.
 		germ_level = 0
 		return
 
-	if(germ_level > 0 && owner.bodytemperature >= 170)	//cryo stops germs from moving and doing their bad stuffs
+	if(owner.bodytemperature >= 170)	//cryo stops germs from moving and doing their bad stuffs
 		//Syncing germ levels with external wounds
 		for(var/datum/wound/W in wounds)
-			if(!W.bandaged && !W.salved)
-				W.germ_level = max(W.germ_level, germ_level)	//Wounds get all the germs
-				if (W.germ_level > germ_level)	//Badly infected wounds raise internal germ levels
-					germ_level++
-
-		if(germ_level > GANGREN_LEVEL_ONE && prob(round(germ_level/100)))
-			germ_level++
-			owner.adjustToxLoss(1)
+			//Open wounds can become infected
+			if (owner.germ_level > W.germ_level && W.can_infect())
+				W.germ_level++
+			
+			//Infected wounds raise the organ's germ level
+			W.germ_level = max(W.germ_level, germ_level)	//Wounds get all the germs
+			if (W.germ_level > germ_level)	//Badly infected wounds raise internal germ levels
+				germ_level++
 
 		if(germ_level > GANGREN_LEVEL_TWO)
 			germ_level++
 			owner.adjustToxLoss(1)
+		
+		else if(germ_level > GANGREN_LEVEL_ONE && prob(round(germ_level/10)))	//aiming for a light infection to become serious after 40 minutes, standing still
+			germ_level += 1
+			owner.adjustToxLoss(1)
+
+
 /*
 		if(germ_level > GANGREN_LEVEL_TERMINAL)
 			if (!(status & ORGAN_DEAD))
diff --git a/code/setup.dm b/code/setup.dm
index 3c190f1e2ad..9cb3645c795 100644
--- a/code/setup.dm
+++ b/code/setup.dm
@@ -765,4 +765,12 @@ var/list/RESTRICTED_CAMERA_NETWORKS = list( //Those networks can only be accesse
 //Shuttle moving status
 #define SHUTTLE_IDLE		0
 #define SHUTTLE_WARMUP		1
-#define SHUTTLE_INTRANSIT	2
\ No newline at end of file
+#define SHUTTLE_INTRANSIT	2
+
+//Germs and infection
+//These numbers have been calculated so that an untreated cut will become a serious infection after 50 minutes.
+#define GERM_LEVEL_AMBIENT		120		//maximum germ level you can reach by standing still
+#define GERM_LEVEL_MOVE_CAP		300		//maximum germ level you can reach by running around
+#define GANGREN_LEVEL_ONE		50
+#define GANGREN_LEVEL_TWO		1000
+#define GANGREN_LEVEL_TERMINAL	2500