Note that it says you only have 2 regen, but will warmogs you will in the end have at least over 100 health per 5 regen!

The build is build up around health, thats why you buy warmogs first!
When so many health you can endlessly use Q and W!

This build is build up to use as tank, so you can tank against you enemies, while your team do the damage!

Your objective is do take so much damage as possible, to be main focus, because you have alot of health, regen and gets its easy by ult.

The build is builded up on health, therefor you can spam your skills.

Use of Q:
You want to Poke as much as you can, Mundo is a brilliant poker, use he Q as much as possible, you will barely loose any health because of the regen you will have.
Use of W:
You want to use W around the minions, you can use it get many minions as possible for a tank. Remember to untoggle it when no enemies near you.
You will have a great regen so do not worry on health.
Use of E:
The use of E is very Basic, just use it to kill minions, it will not take any health and and the health will come!
Use of ULT:
Dont be afraid to use on low health, because it has low cooldown and is nice and good.
You can also use it get away will low health because of the improved movement speed.

Pros:
1. Your Q will do ALOT of damage in start and end!
2. You will have ALOT OF HEALTH!
3. You will also have nice amount of armor

Cons:
1. You will not damage so much with normal attack

If you can think of anything else, let me know ;)

Hope this helped you very much playing Mundo as a tank.

Also if you see any flaws and things that you think is better, let me know.
Give me helpful Criticism, no hateful comments, thanks !:)

Goodluck guys! ;)