The Forceful Athletic House is an episode from the Doraemon 1979 anime and 2005 anime. This episode is called The House of Forced Fitness in the U.S. English version/dub.
Plot[]
Nobita is sleeping and being lazy as usual but Doraemon doesn't like that and so he decides to activate a gadget called Athletic House which makes the entire house a gym. Meanwhile, Nobita goes outside to play baseball while Suneo's mom comes in as a guest and that is when Doraemon's plan to make Nobita be athletic backfires on him! Doraemon doesn't want Mrs. Honekawa to enter the house but Tamako scolds him for his misbehavior and lets her comes in.
As soon as they enter, the house turns into a gym already and the corridor of the ground floor turns into a Treadmill! They somehow manage to get in the Living Room but it turns out the floor of that room is now a trampoline. Tamako sends Doraemon to stop the gadget and he tries his best but fails and at the end Tamako and Suneo's mom themselves stop the gadget!
The episode ends with Nobita returning to the house and seeing the tired Doraemon, Tamako and Mrs. Honekawa lying on the floor. He then says that they shouldn't be so lazy and should play outdoor games like Nobita.