at least tell us la your location, or your preferred location.

why 5 am ??

Earliest I know of is at 6 and that's cause I go at 6!

U wanna train muscle so early? After a long hour of sleep, u're encountering food deficit wor. I would suggest u do in the evening.

if you have the $$, why not try http://www.bootcamp.com.my/schedule.php
stats quiet early

6am celebrity fitness. sunway pyramid, subang parade, one utama

...people pay for the privilege of getting verbally abused at the ass-crack of dawn in a muddy field?

Many people pay PTs to help them count their reps too... 

I think most of the gym open at 6.00AM ... That was based on my personal experience. Well, at my place here, there's a gym that operate 24/7 but too bad, its not at Malaysia.

True Fitness branches open at 6. Jaya 33, Hartamas, Pavillion and Subang. Of all the branches, IMO, the one in Jaya 33 is the best. All weights and machines are located on the same floor, side by side. Senang nak superset ke ape-ape saje la. Many cardio machines are on the same floor too unlike the other branches. 

I think there's a 24 hr gym at Phileo Damansara, Momentum Fitness.