Drinking water can help you lose weight, whether you're restricting your calories or not. Consuming 2 cups of water before a meal helped a group of obese adults lose 2 pounds over a 12-week period without making any other changes to their usual intake, according to a 2015 clinical study published in Obesity.
How many tea bags should you use to make a half gallon of iced tea? One gallon is about 128 ounces, so if one tea bag is good for 10 oz  of water, then about 10 teabags is good for a gallon. Start with 10  and adjust accordingly with water.
Measure out your tea. If your tea comes in bags, you're all set. For loose tea, you'll need approximately 1 teaspoon per 6 ounce serving of water. Use a teaspoon to measure out the correct amount into your tea bag, tea ball or basket filter. Place it inside the cup, mug or teapot you're using.