Not so long ago those of us that enjoyed regular jogs and runs would grab any handy pair of trainers and, as long as they fitted comfortably, would happily set off without a further thought about the suitability of their footwear and the fact that they could cause knee and ankle problems.
Aleotard is a one piece costume made of skintight material, which covers only the body leaving the legs free. The normal way to put one on is by entering through the neck region. The outfit is held in place by the elasticity of the fabric. Tights are generally worn on the legs.
Trainers or sneakers are a type of athletic shoe that has become extremely fashionable for all ages but especially with the teen crowd who want to impress their peers.