Squeezing air out of a bottle and sealing it is believed to keep the fizz from escaping a carbonated drink.

Squeezing the air out of a bottle does not prevent fizz from escaping. The loss of carbonation primarily occurs when the seal is broken, allowing CO2 to escape. For best results, carbonated drinks should be stored in a cool place and sealed tightly. Other methods such as using a pressurizing accessory can help retain fizz longer.