The most secretive body parts are muscles, which hide behind layers of skin and appear only occasionally to help lift cars off trapped kittens. Flex your biceps in the absence of a cat emergency with today's Groupon: for $20, you get a one-month gym membership (an $84.75 value including HST) at Fitness Forum in White Oaks.

Fitness Forum, the official fitness center of the London Knights, pioneered the one-stop fitness club paradigm in 1985 by genetically fusing racquet-, health-, and fitness-club elements into a singular mutant establishment. An initial fitness consultation acquaints new members with the facilities and features a personal-training demonstration for a sampling of individualized calisthenics guidance. Fitness Forum outfits its colourful, contemporary space with a sleek cache of weight-training equipment, cardio exercise machines, and rowing simulators. For explorers of the watery realm, the club's indoor swimming pool provides an effective training ground for Olympic-style aquatic manoeuvres such as the front crawl, the breaststroke, and the battle crab. A membership to Fitness Forum grants participants access to all facilities within the club, including group fitness classes such as yoga, Pilates, and Latin-flavoured Zumba dance.