The Tummy Time Travel Gym is part of a new range of toys developed to encourage babies to reach when playing, helping them to develop the muscles needed for rolling over, sitting up and crawling. Activity play gym with lots of stimulating features to entertain baby.Why Tummy Time? Tummy Time plays a pivotal role in the full body muscular development while preventing 'flat head' syndrome in infants. Infants can see black and white before any other colours during their first three months of life.