1 The discounted âMetered Mailâ category for First Class Mail Letters (1 oz.), which includes online postage providers and postage meters, will increase from $0.48 to $0.485 in 2015. 2  First Class Flats (1 oz.) will stay the same at $0.98 in 2015. 3  Each additional ounce will cost $0.22 (up one cent from 2014). First Class Package International Service will see an increase of 7.2% in 2015. 2  Commercial Base (online postage) rates will start at $6.39 (1 oz.), up $0.23 compared to 2014. 3  Priority Mail International will see an increase of 5.5% in 2015.
Fifteen minutes before you start, you should then drink another 8 to 10 ounces and then continue to drink another 8 ounces for every 15 minutes of physical activity if possible.
A general recommendation for those doing moderate- to high-intensity exercise is to drink 17 to 20 ounces of fluid two to three hours before exercise, and consider adding another eight ounces of water or sports drink right before exercise.