Nerf gasping and reenable metabolism (#2261)

Content.Server/GameObjects/EntitySystems/MetabolismSystem.cs

@@ -0,0 +1,20 @@
+using Content.Server.GameObjects.Components.Metabolism;
+using JetBrains.Annotations;
+using Robust.Shared.GameObjects.Systems;
+
+namespace Content.Server.GameObjects.EntitySystems
+{
+    [UsedImplicitly]
+    public class MetabolismSystem : EntitySystem
+    {
+        public override void Update(float frameTime)
+        {
+            base.Update(frameTime);
+
+            foreach (var metabolism in ComponentManager.EntityQuery<MetabolismComponent>())
+            {
+                metabolism.Update(frameTime);
+            }
+        }
+    }
+}