stop this nonsense

code/modules/surgery/organs/augments_chest.dm

@@ -166,7 +166,7 @@
 		if(crit_fail || (organ_flags & ORGAN_FAILING))
 			if(!silent)
 				to_chat(owner, "<span class='warning'>Your thrusters set seems to be broken!</span>")
-			return 0
+			return FALSE
 		on = TRUE
 		if(allow_thrust(0.01))
 			ion_trail.start()
@@ -195,28 +195,28 @@
 
 /obj/item/organ/cyberimp/chest/thrusters/proc/allow_thrust(num)
 	if(!on || !owner)
-		return 0
+		return FALSE
 
 	var/turf/T = get_turf(owner)
 	if(!T) // No more runtimes from being stuck in nullspace.
-		return 0
+		return FALSE
 
 	// Priority 1: use air from environment.
 	var/datum/gas_mixture/environment = T.return_air()
 	if(environment && environment.return_pressure() > 30)
-		return 1
+		return TRUE
 
 	// Priority 2: use plasma from internal plasma storage.
 	// (just in case someone would ever use this implant system to make cyber-alien ops with jetpacks and taser arms)
 	if(owner.getPlasma() >= num*100)
 		owner.adjustPlasma(-num*100)
-		return 1
+		return TRUE
 
 	// Priority 3: use internals tank.
 	var/obj/item/tank/I = owner.internal
 	if(I && I.air_contents && I.air_contents.total_moles() >= num)
 		T.assume_air_moles(I.air_contents, num)
-		return 1
+		return TRUE
 
 	toggle(silent = TRUE)
-	return 0
+	return FALSE

code/modules/surgery/organs/heart.dm

@@ -49,12 +49,12 @@
 /obj/item/organ/heart/proc/Stop()
 	beating = 0
 	update_icon()
-	return 1
+	return TRUE
 
 /obj/item/organ/heart/proc/Restart()
 	beating = 1
 	update_icon()
-	return 1
+	return TRUE
 
 /obj/item/organ/heart/proc/HeartStrengthMessage()
 	if(beating)

code/modules/surgery/organs/organ_internal.dm

@@ -245,7 +245,7 @@
 //Try code/modules/mob/living/carbon/brain/brain_item.dm
 
 /mob/living/proc/regenerate_organs()
-	return 0
+	return FALSE
 
 /mob/living/carbon/regenerate_organs(only_one = FALSE)
 	var/breathes = TRUE

code/modules/surgery/organs/vocal_cords.dm

@@ -134,7 +134,7 @@
 	var/cooldown = 0
 
 	if(!user || !user.can_speak() || user.stat)
-		return 0 //no cooldown
+		return FALSE //no cooldown
 
 	var/log_message = uppertext(message)
 	if(iscultist(user))
@@ -597,7 +597,7 @@
 
 	var/special_check = get_vog_special(user)
 	if(!special_check)
-		return 0
+		return FALSE
 
 	. = min(base_multiplier * special_check, VOG_MAX_STANDARD_POWER)		// anything above should require conscious admin fuckery, as things are balanced around 3 multiplier tops (see: damage being 15*3)
 	if(!specific_listeners.len)
@@ -617,7 +617,7 @@
 			return 0.5
 		if(user.mind.assigned_role in GLOB.command_positions)
 			return 1.4		// heads are great at speaking with authority
-	return 1
+	return TRUE
 
 //////////////////////////////////////
 ///////ENTHRAL VELVET CHORDS//////////
@@ -665,7 +665,7 @@
 /proc/velvetspeech(message, mob/living/user, base_multiplier = 1, message_admins = FALSE, debug = FALSE)
 
 	if(!user || !user.can_speak() || user.stat)
-		return 0 //no cooldown
+		return FALSE //no cooldown
 
 	var/log_message = message
 
@@ -688,7 +688,7 @@
 				listeners += L
 
 	if(!listeners.len)
-		return 0
+		return FALSE
 
 	//POWER CALCULATIONS