GYM question?

How do you unlock special gyms ?

By meeting the requirements for them, each one has different requirement.

You can read about it over here : http://www.torn.com/wiki/Gym#Requirements_for_Special_Gyms

Specialist Gyms Overview
Each of those gym require to fulfill certain conditions in case to unlock it. Gym will be re-locked, if you'll fulfill them no longer, however you won't need to pay unlock fee second time, when you meet the requirements again.

Gyms name Load image	Cost to unlock Load image	Cost of 1 train Load image	Strength gains Load image	Speed gains Load image	Defense gains Load image	Dex. gains Load image
Balboas Gym	$50,000,000	25 energy	-	-	7.5	7.5
Frontline Fitness	$50,000,000	25 energy	7.5	7.5	-	-
Gym 3000	$100,000,000	50 energy	8.0	-	-	-
Mr. Isoyamas	$100,000,000	50 energy	-	-	8.0	-
Total Rebound	$100,000,000	50 energy	-	8.0	-	-
Elites	$100,000,000	50 energy	-	-	-	8.0
The Sports Science Lab	$500,000,000	25 energy	9.0	9.0	9.0	9.0
Unknown	$?	? energy	-	-	-	-

Requirements for Special Gyms

Balboas Gym Requirements: Cha Cha's unlocked; (Defence + Dexterity) 25% higher than (Speed + Strength)

Frontline Fitness Requirements: Cha Cha's unlocked; (Speed + Strength) 25% higher than (Defence + Dexterity)

Gym 3000 Requirements: George's unlocked; Strength 25% higher than your second highest stat

Mr. Isoyamas Requirements: George's unlocked; Defence 25% higher than your second highest stat

Total Rebound Requirements: George's unlocked; Speed 25% higher than your second highest stat

Elites Requirements: George's unlocked; Dexterity 25% higher than your second highest stat

The Sports Science Lab Requirements: Last Rounds unlocked; no Xanax or Ecstasy taken

Unknown Requirements: Well, unknown.

but what's cha cha's unlocked and george's unlocked.

Cha Cha's and Georges are heavyweight gyms. You need to unlock those as well before you can have access to special gyms