There are no seriously hardcore bodybuilding gyms in Singapore - if you're thinking of Metroflex-style or Dungeon-style. So don't expect to find any gym here that embraces shouting and screaming, people hurling 20 kg plates and dumbells across the floor and chalk dust flying everywhere.
Having said that, Fitness Force Gym in Cairnhill Community Centre is the official gym of the Singapore Bodybuilding Federation and it's owned and operated by a former Mr. Singapore, Kevin Chiak.
http://www.fitnessforcegym.com/
It's pretty small but the equipment is well chosen and it encourages serious bodybuilding.
(Mods, please note - I'm NOT advertising the gym here - just passing on info.)
As far as I'm aware "The Pit" in Tanjong Pagar is more like a personal training gym and doesn't have a general gym membership option.
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