Run the Update() of a item in a List<>

Unity Engine
1

How can I make the Update() function of an item run inside a List<>?
I need to run timers that are inside items in a List<> in the Update() function Here is the code of the Item:

using UnityEngine;
using System.Collections;

[System.Serializable]
public class Units  {
	public string Name = "John";
	public int Life;
	public int Food = 14;
	public int Water = 3;
	public bool Infected = false;
	public bool Dead = false;
	public int Strength = 0;
	public int Agility = 0;
	public int Inteligence = 0;
	public int Medicine = 0;
	public int Science = 0;
	public int Survival = 0;
	public int LockPicking = 0;
	public int Electronics = 0;
	public int Hacking = 0;
	public int Combat = 0;
	public int traps = 0;
	public int InfectedSeconds;
	public int InfectedMinutes;
	public int InfectedHours;
	public int InfectedDays = 3;
	// Use this for initialization
	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {
	if (Infected){
	InfectedSeconds -= Mathf.CeilToInt(Time.deltaTime);
	if (InfectedSeconds <= 0){
			InfectedMinutes -= 1;
			InfectedSeconds = 59;
		}
	if (InfectedMinutes <= 0){
			InfectedHours -= 1;
			InfectedMinutes = 59;
		}
	if (InfectedHours <= 0){
			InfectedDays -=1;
			InfectedHours = 23;
			}
		}
	if (InfectedDays <=0 || Food <=0 || Water <=0){
	Dead = true;
		}
	}
	
}

Thanks!

2 
public class GameController : MonoBehaviour {
     private List<Unit> units;

     protected void Update() {
          for (int i = 0; i < units.Count; ++i) {
               units[i].StepTime();
          }
     }
}

public class Unit {
     public void StepTime() {
          // do stuff
     }
}
3

Thanks it works!

I’m really stupid for not thinking of using a public function! :lol: