All tower blocks on the Pearl have pools - but sometimes shared between two towers and not always big enough for serious lap swimming.
The new Qanat Quartier (aka Little Venice) area of the Pearl, now coming on the market, does not however have even one pool for the whole section. A big mistake IMO. Don't think there is a gym either? Opportunity missed - a big communal sports club (even if it charged membership) would have been a big asset / attraction.