ENRG Fitness Is The Answer. ENRG Fitness is one of the best gym in Australia. We are 24*7 Gym. We provide hassle free services like Hot Yoga, Muay Thai, Weight Loss, Personal Trainer, Group Fitness. Currently, we are offering 3 days free trail . We have tailored memberships which will suit your lifestyle. ENRG Fitness is home to over 250 of the latest, state of the art weight and cardio machines spread out over 2000 square meters of full air-conditioned floor space.